As above, I'd take up any offers from people who have State side contacts etc to help find the car of your dreams. I "rolled the dice" on mine as it was everything I wanted except wasn't a big block (4 speed manual, blue, side exhausts). Big block would have been lovely, but the extra expense of it all. Then I considered I wouldn't really be driving it that fast anyway, so I figured the 300hp small block mine has was plenty for me. Being it is an old car, you get that "feels and sounds fast" feeling, but in reality its not going that fast. But I like it. My "dice rolling" turned out not to be that great and the car had main niggles that I've mostly ironed out now.
Side exhausts, as above, were factory optioned on 69 only. However, you can retro fit them to many years. My car is a 1968 model and it came with side exhausts from the states when I bought it. I've since replaced the original piping with stainless steel side exhausts etc.