Need tech help

[Hozer 88GTConv]

You would need at least 30lb injectors and a bigger (i.e. 90mm-ish MAF) to optimize your setup. The bigger injectors would be mandatory though, IMO.
The trick is with injectors, you never calculate their output at 100 percent of their duty cycle, because they would wear out too quickly. The Mustang Handbook recommends calculating your fuel requirements based on an estimated horsepower output of your combo using only 80 percent of the duty cycle of a given injector. This leads to a much more uniformly reliable spray pattern over a greater time frame, i.e. reliability over time for a daily driver.
Eddie Miller or Mike Lynch at Racer Walsh here in Jax would be great help for you. 904-291-2289
I'm not too sure about those pistons either, maybe for lower boost psi, but forged pistons would be better.
Good Luck...