Help need advice...would u buys these?

I would buy them pretty quick, they won't last long. That looks like the light weight drag race set up. I would run them on the street over the 9" drum any day. The 73+ disc brakes would probably be better for heavy duty street use.

considering how much the a body disc brake weighs i would never use them... i'll be going to wilwoods on the 68 and something like vipers on the 73