Forged 2.5 and 20g
 

What power do you think a td06 20g would make on a hawkeye forged 2.5L Sti on oem top mount?

td05 20g makes roughly 400hp if its a proper 1, the td06 is a bit bigger and would give more top end at the cost of a slower spool, its around 420+hp ish as far as iam aware. Ive read anything from that to over 500hp but i find that hard to believe, 1 thing to bear in mind, the hawk top mount is reaching its limits as is the headers at around 400bhp