Building 69 383 for my 69 dart.

I have the combo you're looking for -

0 deck block
stock crank
stock rods w/ ARP bolts
KB 5cc dome pistons (11:1 static)
cam of your choice (I have a tiny Comp 280H)
roller rockers (I have Crane 1.6's)
Stealth heads - ported, Comp springs, milled flat
unported Edelbrock Performer RPM
1/2" 4 hole spacer
750 QFT carb
under drive crank pulley
2" headers
3" exhaust

Made 460hp/450ft lb under 6,000rpm. boils drag radials, and is a TON of fun - guy that owned the dyno said with a better cam in the .580"-.650" lift range it would make over 500hp