have you looked into DSS?? they have a web site so you can check out their set ups and prices. www.dssracing.com. i dont know what their warranties are but they build a nice engine. id also reccomend AFR for heads. weve used the AFR 165 and the AFR 185 and loved them both. may be worth checking out. one of the mustang mags did a few articles on them. if i remember right. the 165 was a bolt on 98 hp gain.

bob