It's a small turbo. Only 50trim. And 50's are cheap. And if I go big single I have to buy a bunch of stuff that I don't need and won't spool as fast. I got my 351W heads last night so they will be going out to be cleaned and machined today. Also having .600 lift valve springs put in with a 3angle valve job and porting.I'll post pics when I get them back