my bro spoke to the owner of Full-Race.. and what he said is, on a rotated mount gt30 setup.. (ryans equivalent) would have gains in the ballpark of 500+rpm spool up and an additional 50whp+ on pump.. i forget the torq gains.. but i'm sure its nice. \
The kit is expensive.. but i'm just putting it out there for people who are thinking about going big on their subie.. It makes sense to spend the $$ on this nice kit and not have to upgrade later.. and go through 2 or 3 setups to get to what they really want.
my cousin is going to order the evo twin scroll kit when he sees that people have it on and working! i can't wait.
why not VTA! its awesome.. yeah it's loud.. but it sure makes you feel like you're going faster! lolol