I have a y8 using a Precision GT3255E looking for 350 at 18psi most likely. Internals and such can be found in my FS thread linked to the pic in my sig.

Previous setups was with the drag kit on a Tnetics T3/T4 .60/.61 "Super V" made 306whp @ 6700RPM with 20 psi.

Previous to that before Hondata, I was using analog fuel management with the VAFC hack on stock internals. 12psi netted 226whp for about 30,000mi before I turned it up to 15psi and ended up shattering a rod. (to get the motor build going, lol)