speaker options, very limited space

I would like some input on what the best speaker combinations are on a car we are finishing a restoration on.  The space is extremely limited and everything must be hidden.  The car is a 1960 Buick Invicta convertible.  The stereo is a Secretaudio SST by Custom Autosound.  The amp hasn't been purchased yet, but we have a new Kicker KX350.4 that I may end up using. 

The areas I have to mount in are: each of the factory speaker locations and the kick panels.  That's it.  The factory spots are in the center of the dash and in the upper, middle rear seat.  In the dash I have about 7"-7.5" diameter, the rear in have maybe 6.5" and it is relatively shallow.  The kick panels have 7" diameter and plenty of depth.  There will be no subs or speakers in the trunk (by owner's request).

I have fabed some 6.5" component bucket enclosers for the kick panels so far.  I am undecided about what to do with the front and rear center spots.  The company that makes the stereo also has some DVC speakers that look like 6.5" with twin tweaters above it.  They claim it is run on both channels.  I don't know of anyone who has used these and I havn't seen any reviews.  Anyone out there use them?  I was considering using two 3.5" in the front spot, but I don't think it will sound good??

Please post your thoughts if you have an idea about the best speaker configeration for this install.  Thanks in advance.

people arent responding to your question for one of two possible reasons:

1) your question has redundancy in it, and the answer is in front of you

2) lack of information on our part

can you post pics? maybe that will help drum up some support from these guys

  Any help??  I understand this is a very basic install and this system is not going to sound great no matter what I choose, but I need it to sound as good as possible.  I am the only installer at our shop, and we have done a full frame off restoration on this car, so if the stereo sounds like doodie I will look like a dick.

  I lack the experience to be able to choose the correct configeration for the speaker setup in this car as my stereo duties usually only require adding an aftermarket headunit, or adding subs to an existing system.  I will probably end up using speakers that fit the best (size-wise), and not ones that will sound the best.  I also an unsure of the wiring configuration that will be best.

  Does anyone have an opinion on this setup?: 

-6.5" components in the kick panels.

-one 5.25" in the front center location.

-one 5.25" in the rear center location.

I guess one 5.25 would have to be wired front left and the other front right?  The two 6.5's as the rear?

Are two small 3.5" in the front center wired left and right better?

The amp is going to be a Kicker KX350.4.

Thanks in advance.

Thanks for the advice.  The car in the picture is identical to the one I'm working on.  The grilles in the kick panels have louvers that originally blew warm air toward the passengers.  The 6.5" components will be behind those grilles.  It is not required that I fill all the locations.  In the center of the dash you will notice a square speaker grille that is actually part of the steel dash panel.  My front, center speaker or speakers would be under that grille.  I have attached a pic of a similar rear speaker grille (upper, center rear seat).

The headunit is a Custom Autosound Secretaudio SST.  50X4, 4 channel 3 volt RCA pre-outs, subwoofer pre-out.

Thanks again for your help.  I will run the components for now.  If need-be I can add other speakers later.  These cars originally came with just one speaker in the front.  You could order the rear speaker as an option, but you could only use one at a time.  If your car was equipt with the optional rear speaker it also came with a selector switch to choose front or rear use!  Also, the speaker only had a single wire to it from the headunit and was self-grounding.