I need help finding a kit to repair a 73 Rochester 800cfm carb. It came off my friends Buick 455, and from what he learned the accelerator pump is where the problems at. i did a search on google and couldn't find anything too promising.

Forget the computer. Get the number off the secondary air horn, driver's side (7 or 8 digits). Take that number to NAPA and order the appropriate kit. NAPA has the best quality kits, these days. Be sure to replace the float and filter while you're in there.

Agreed; and for $7 upgrade to the brass float. I know Walker still makes them.