I ran BBK equal length shorties on my '90 and always had issues with them rubbing on the the shock tower (vibrations, etc.). Also, I definitely agree with gearheadboy, if you get BBKs, throw away the gaskets and get some Felpros. Locking nuts are always good on headers too.
For my current car, I was going to get some unequal length shorties when I upgrade the entire exhaust. They fit so much better than the equal length--I'll take a few less horsepower in exchange for no rubbing.