Modern Drivetrain Swap into '65 Valiant

I have a Mopar A833 four speed bolted to a 1956 model Chrysler 331 Hemi. Bolted right on. A deaf, dumb, mute, blind, retarded chimp could have done it. You're talking about a 1" plate and a 1" spacer for the flywheel or flex plate. Nothing complicated or complex. Right. From your original post, from what I gathered, you were keeping the slant six. Have you decided against that now?

they are not impossible to find. I traded some 340 torsion bars for the one I have (pictured). I have an 87 D100 that originally came with a slant/904 that I will most likely use the adapter with a built slant and A500 in the truck

OK well now you're making me think that this adapter idea could actually work. From some searches on other forums I was getting the idea that working with the slant was just going to be way too difficult. I'd like to keep the slant but I don't want to do a ton of fabrication (as seems necessary with the T5) to get a different trans to work with it.

The priority is the transmission. If I'm using a trans from the 90's, say, it seems to make most sense to also use an engine that already works with it, unless the slant will fit fairly easily and cheaply, as you say. I'm just not familiar enough with different vehicles to know what would be a good package to use in place of the slant.

Why couldn't a guy fab a custom pan and pickup, and "slant" a Jeep 6?

Now that would be a challenge way beyond my skills, but cool to see! I foresee some difficulty mating a transmission to that. Slanting a transmission would probably affect lube flow, right?