Proline ( www.prolineracing.com) makes an Escalade body.

Btw if you're in it seriously now [>:], put some wide bumpers on that thing and give it to your kid stock and get yourself a nice electric Stadium truck or 1/10 Buggy [>:].

And sorry, it is very hard to turn any 2WD into a 4WD (unless it is mede for it...but there's only one vehicle Ive ever seen that was made for that...and its only like a year old).