hi can any tell me will this fit onto T3 casting if so wot will it make as i now the casting will not let it give its all

http://cgi.ebay.co.uk/cosworth-turbo...d=p3286.c0.m14

 

the t38 is designed to fit on a t3/t4 manifold flange. if you're using a 2wd manifold (which it looks like you are in your resto thread), it won't be a restriction at all. these turbo's are designed for about 450bhp iirc, don't quote me on that though.