well, when i rebuilt the motor, i decked the block and shaved the heads, to give a little extta compression, it's bored over .060, timing advanced to places the computer doesn't like. intake mani is polished inside, as are the heads, tightened valve springs(no hp, just revs), slightly better cam, and exhaust work.
centercaps? nah, i like the white steels how they are. they're the only wheels that look decent on a white 1st gen, in my opinion.