Originally Posted by NChatch
the sc34 or 44 are great and they spool sooner than that, SOHCs run both of those.
the .63AR would be the laggier of the 2 ARs, the other being a .48
i have seen a gsR dyno by jeff evans, and it was on a customers STOCK gsR and it had a .48 exhaust housing and make well over 250, just on the brink of 300 with ease
im still not sure what the exhaust housing numbers mean.. the smaller the number means the smaller the hole is on the exhaust side?
Why would it spool sooner because of that?