I will be installing longtubes with a hiflow custom ypipe (with cats) this spring and since the car is going to be retuned would upgrading my heads from current setup give me substancial gains?

My current combination consists of the following:
ARE street eliminator heads (ported stockers,2000 casting)
Comp 224, 581/581 114
LS6 intake
Ported TB
LS6 ported oil pump
Made 380 rwhp and 374 rwtq (6 speed car)

I am leaning towards a set of PRC's or Patriots. AFR are a little out of my range.

Thanks for the input. Car is 2000 Camaro SS.

 

TTT please