Help!!

I have to agree with oldvart. I love the 383, I think it is an awesome engine. But you can make a 360 run pretty good in an early a body and the 360 is cheap and plentiful.
It is also lighter than a 383. If I had a 67-up dart, a big block would be in it. But since I have a 66, a 360 or a 408 will be as big as it will get. And it was hard enough on the wallet to buy headers for a small block. Don't know what headers would cost for a b or rb engine!