Just got myself a 68 Barracuda Fastback!

I'm a big block guy. However, if I had a 68 Barracuda, I'd probably be too tempted to build a SS/AH clone factory look or close too it. I know the SS cars are overdone, but they are just so awesome.
Yea that'd be super cool but my trans is a 23 spline and if I'm not mistaken it will only fit a small block. Plus I'm planning on using some of the sb accessories and brackets for the 408. And my bellhousing. But yeah a big block would look amazing in there.