Any more?

[Jparks]

Here are some specs of my current setup. I am wondering if there is anything I can change out to get significant increases, no budget either. I'd like to go without blower or turbo options to start. Then I'll take advice on that too. I'm not opposed to the blower if that's what it's going to take though, it'd just have to be a low profile blower, don't want to run a cowl hood or cut a hole in the hood.

Block:
New GM 4 Bolt Main
4.003" bore
One piece rear
Diamond Honed

Crankshaft:
3.800" Stroke
Micro polished and chambered

Rods:
5.7" Center-to-center

Pistons:
Hypereutectic
Zero Deck Height

Heads:
AFR custom, straight plug
2.02"/1.60" Stainless valves
75cc Chambers/180cc Intake
Full CNC

Carb:
750 cfm quickfuel double pumper

Manifold:
Performer RPM Air-gap dual plane

Cam:
Custom ground hydraulic roller
.510" intake/.521" exhaust lift
231 intake/ 236 exhaust duration @ .50"
111 lobe center

Rockers:
1.5:1 full roller

91 octane
6200 Maximum RPM
Currently Dynoed at 504hp/490tq

I'm a noob with performance engines so go easy on me.