i'd guess that most people would recommend a weber carburetor conversion for you; that's what i got recommended several times myself. however, there's lots of stuff you can do to any A-series engine, so it really depends on how much money you're looking to spend, and what you're using the car for, i'd reckon.

as for looks, well, i picked up a pair of louvers for my b310 off of ebay that look pretty badass...new rims wouldn't hurt either, but i wouldn't go bigger than 14" without a little creative hammering or lowwwww profile tires. there isn't much clearance up front.

my 14" rims with 60-series tires:



do you have pics of your car? what bodystyle is it?