I'm running a PTE 46mm wg, drewgo mani, BW91-79 with a pretty big undivided T4 housing. Its laggy but that bad and well worth it.
Go with the 40r, thats a little smaller than what I'm running and I see full boost ~4600rpm (Standalone, cams, e85,etc)
Ebay manifolds are great, most of the...