How bout 6 kids on a tight budget.
388 eagle assembly with 5.7 rods and KB134 flat tops
AFR 220X old heads milled to 48 cc chambers
Roller cam (drag race only) alky inj toilet
Powerglide
2950lb car 6.29 @ 108 1/8 1.29 60 ft
Zip put it together and Zip and some more on here have seen it run.
Leave on the converter (5800) and it will ride the bumper for 300+ft
Go with what you have. You can find a good set of aluminum heads for around 900 used. Then you have 600 to spend on that intake and carb. Buy a Holley Blue and have fun.