which engine should i get?

[69chevy lwb]

Buy a ls motor and do a carburetor. You can get a complete motor and trans for the price of that motor then the carb conversion will be about 1000 with a carburetor if bought new. And those ls motors are light years ahead of the old sbc. You can also buy adjustable motor mounts from cpp that will let yo use the stock sbc mounts and still give you inches of forward and back adjustments. I have a 5.3 ls with a hot cam, ported heads, and a carburetor and that thing is wicked I can spin the tires at 60+ it's almost excessive as I can spin the tires just letting the clutch out to fast!