92 grand marquis

i just aquired a 92 grand marquis, i am taking my entire system out of my grand am and am installing it in the big merq. so my questions are how to remove the four door panels, the rear seat and of course the rear deck, thanks anyone who can, its greatly appreciated!

i am thinking about putting two fi btl 18's in the trunk of my 92 marquis. i was thinking subs up, port up. but i do not know if i will have enough room for two 18's. tomarrow i will have the area measured out, but ive been thinking about doing this, and i would also liek to know if anyone has ever put one or even two 18's in the trunk of a grand marquis. thanks! any help is appreciated!

ok in my marquis i looked up the front door speaker sizes and here on the 12volt they gave me 6 1/2" and on onlinecarstereo they gave me 6x8's so if anyone could clear this up for me, that would be great! any help would be greatly appreciated. thanks!