My 93 Cobra made 405rwhp & 395rwtq on Brothers Performance Dyno 5yrs ago. It had an S-Trim (11#'s) and BBK 1 5/8 LT's, catted h-pipe and MAC cat-back. The rest of the motor was stock from the oil pan to the maf. Coincidentally, I'm getting that car back this weekend after 4 years.
Yeah I switched from the stock 3.33 pulley to a 3.00. It picked up 3#'s from that. I had the stock 24# inj and stock maf. I was using 12-1 FMU I believe too.