Slant six single, to slant six double.

Of course I've thought about it. Just seems like throwing a 318 in it is alot more work. From the suspension to a different trans. Just alot haha
You aren’t wrong. It’s a lot of work and most guys never finish em and end up selling the project half baked. But that’s a different topic. The good news is ITS WORTH IT!! If you’re after some power.