just grab a driller and a file and cut those doors!
if you are careful and have some good guidance it will look clean, you should be ok.
this is what i did to my merc (
) .. some ppl say it is SIN to have done this to such a car, but I like the way it looks, it looks clean IMO, and the sound is great
For the 33, I think we will end up just putting good tweeters in the front (maybe in the dash, he will not touch the doors (
) and probably 6x9s in the back, and maybe a sub. I dont really like this setup but I dont see any better choice really ..