after 91.5 they were intercooled and had much smaller injectors. You will be hard pressed to make 300whp with them, not that it matters cause you don't have enough air. Those injectors are big enough to make it plenty hot, I usually back out of my 12v at 1600* but I've seen Dvst8r bury his pyro past 1800* many times with no ill effects.
Do a 3200rpm governor spring, cut the fuel pin, add about 1/4" of timing, get a smaller turbine housing cause that motor has the lagmaster 21.5cm^2 housing. Add a tighter torque converter, 2nd gen flexplate, and transgo shift kit to get some life out of the trans before you blow it up. I also see you are missing the tps so do a search on DTR to find out how to do the potentiometer conversion. While you're there read all the stickies.