First 360 build

Alright so i need some help with the type of headers that would give me the most gains if any!! .
The engine is back together. This is what i have..
Factory crank
.030 piston over
Edelbrock rpm performer heads with Rpm performer dual plane high rise intake.
The cam is comp cam extreme energy 218/224 @ .050 and lift @ .462/.470 on a 110 LSA. 5800rpm max
Matched up with the ultra pro magnum rockers 1.5
Msd ignition system 6al box plus dist & coil.