I'd just use the 170's.
If you need them ported for a race block stroker in the future you can send them to TEA to have cnc ported.
With a supercharger the 170s will flow enough to split the block.
42lb injectors are fine, I wouldn't go past that number, it will probably keep it simplest with the meter.
The injector sizing chart doesn't reflect the real world use, it's all theory and it's not correct.
And throw your jamex springs in the dumpster.
400 to 500rwhp (i'm with hoyster, keep it in the low 400's) is a lot on a crap suspension I hope you are taking care of the suspension and the brakes.
If you need them ported for a race block stroker in the future you can send them to TEA to have cnc ported.
With a supercharger the 170s will flow enough to split the block.
42lb injectors are fine, I wouldn't go past that number, it will probably keep it simplest with the meter.
The injector sizing chart doesn't reflect the real world use, it's all theory and it's not correct.
And throw your jamex springs in the dumpster.
400 to 500rwhp (i'm with hoyster, keep it in the low 400's) is a lot on a crap suspension I hope you are taking care of the suspension and the brakes.