1991 360, what am I likely to find?

Hey:

I'd like to try to put this into the Challenger without getting into the bottom end, save my nickels and build something down the road, the 318 in the Chally runs really well, but well, you know...

It worked out with the Magnum in the Dart, but I'm sure these are a whole different thing.

I thought some skinny head gaskets to build compression, maybe a valve job depending on what it looks like when I get the heads off. Any idea on what range the 308s run in CC size?

About how far should I expect the pistons to be in the hole?

Anyone know if the pistons in this are going to be cast or hyper like the magnum?

Thanks a bunch,

Steve