v8 kframe vs Schumacher kit

Derileek said
the direct connection k-frame page on big block dart is a '73 and up. is it the same for a '72 and under? i have a '68 is it the same?

I don't think so, But I am not sure. I know that the 73 and up are a better K frame. I think it would be harders to do the mods on a pre 73.

Phil