Man... I don't know. I don't want to jinx myself. The last round of upgrades, I said I wanted to run 13.2's, and I only ran a 13.5.
This time, my compression is 1/2 point higher, I got rid of the balance shaft, I'm using a big16g instead of a small 16g turbo, I have a FMIC, and short-route 2.5" pipes, a real BOV, a 3" turbo-back with a test pipe instead of the full factory exhaust, 550cc injectors instead of 450's, HKS cams instead of stockers, no more MAF sensor clogging up my turbo intake pipe, ported and polished head, a few more transmission mods, and enough ARP hardware in the engine for it to hold 30 PSI. I can't do that with pump gas, though.
I want to say low 12's... maybe high 11's with tuning... but given the number of parts I've changed out in this round, it will probably take me a good while to get there. The potential is built in, but if I never get a chance to run it and stretch its legs, it will never meet it. I'm sure that it's capable of making at least 400hp with these mods because many others have achieved that with a big16g and 550's on STOCK engines.