In 94/95 the N/A S351 did make 371 hp and the Vortech blown cars were 480. These cars used the Edelbrock Performer heads. Starting in 96 Saleen switched to the twisted wedge head which added approx 20-25 hp to these engines. So in 96 the N/A S351 was rated at 400 and the Vortech cars were 500-510 depending on the year. Saleen dropped the N/A S351 after 2 years and from 97-99 all the S351s were Vortech equipped. Heres a link to a article I scanned that I posted on a Saleen site. It goes into this in great detail.....
