Gen III/4L60E in an AD?

[muddpile]

I've got myself an AD truck, but I haven't got er home yet, so I figured before I get it into the shop I'd have an idea of what direction I'm going. It's a 5 window GMC shortbox 1/2 ton. My plan is to make a decent driver out of it, up to and including a modern drivetrain.

I'm aiming for a 4.8/5.3/6.0, keep the EFI and use a swap harness, put a MII up front and a 4 link out back with a more modern rearend. I've got the plan, now I just need to execute it.

-All engines are based off the same platform, but is there anything more desireable? Cable throttle body is more my thing vs. Throttle By Wire, but past that?

-Transmissions? 2wd but again, is there anything that varied on these?

-Driveshaft? Is there one off a stock something that can work, or am I better off getting something built?

-Differential? I've seen Camaro diffs used LOTS. What gear ratio and tire height has been proven to work well with these LS based truck engines?

-Which oilpan and exhaust manifolds seem to clear everything with ease, and do most just use a standard "Street Rod" style universal mount? Same goes for tranny mount.

-I know the ECM has to mate itself to the crank sensor, but which ECM is reccommended?

That should be all for now. I could just go the SBC/TH350 route, but with this one, I want something different, and I know I've seen it done before.

Thanks!