450-500hp for a NA 302 is little optimistic, save that kind of efficiency to those stupid little hondas.
Here's a combo from MM&FF 12-00
Stock short block (notched pistons for clearance)
Cam-Comp Cams XE282 (.565, .575)
Heads-AFR 185's milled for 10.5:1 compression
Intake-TFS-R-302
70mm throttle body
77mm Mass air
24 lb. injectors
1 3/4 in. full length headers
That combo made:
423 hp@6000rpm
381 lb-ft@5600rpm
I think you'd be hard pressed to do much better, if at all. This is one Bad A$$ engine? Remeber, thats @ flywheel with no water pump, accessories, etc. Sorry to burst your bubble.
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