RCA connections

I just bought an Alpine CDA-9855, with 3 pre-outputs. My interconnects are Stinger Dream series. But the RCA cable connectors will not fit side by side, next to each other in on the head unit. One won't fit at all due to the Head unit chassis, but if it could they still wouldn't fit side by side. Is this a common problem and how should I remedy it, and not affect SQ. Will right angle or straight connectors degrade my sound quality? Or what type should I buy to prevent losing SQ?

Why wont it fit?  Are the ends to your cables too big for them to be so close?  You could just go with another brand- Streetwires, Monster, Rockford, Phoenix, Tsunami, JL, etc.  I've never had to use adapters to make RCA cable plug into the back of a headunit.  If you do end up using some sort of adapters, just remember that every link in the chain is another possible place for noise to enter (although usually never a problem).  Any shielded RCA cables should be fine.

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My ex once told me I have a perfect face for radio.

yeah the ends are too big, and I can't exchange em.

yeah the ends are too big, I went high quality, and they don't fit and I can't exchange em. I figure a half and inch or so of extension should make that huge of a difference in SQ?

You can use the cables but replace the bulky ends.  Here is some info on that:  https://www.bcae1.com/installationprimer.htm  (go to #7 titled:  Expensive patch cables.)  And https://www.bcae1.com/rcacable.htm.  In real simple terms, the following pic shows what you need:

And of course you will see the other closeup pic in the link along with description.

You can either find a way to alter the excess bulk of the existing ends or buy replacements.  Here is a source online:  https://www.switchcraft.com/ , or you might be lucky enough to have such a source locally.

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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.