For the 1/4 it depends of your level of boost (7psi, 15psi, 20 psi.. it depends of the setup) I've seen low 14s to mid 13s.
Forget about the RB it's way too heavy for the car and you'll need to balance it again and reinforce the body alot!!!! Same for VG. It could all be amazing projects if you have more than 20,000$ to put on a 5-7,000$ car..
RB26DETT. Yes it's an awesome engine.. but you answered to your own question AWD and 6 speed... way too complicated.. and the body is not balanced for that.
I say it's only parts.. you'll want a FMI.. cause at 1,500$ it's TMI plus the piping. New injectors. Turbo upgrade.. tubo manifold. Exhaust... Re-programmed computer from JWT. When i say it's 8,000$ it's if you do it yourself and have no problem during the install.. and don't forget that it's probably been beated to hell before. So a checkup might be a good idea. I'd choose a Black Top over a Red top BTW. 1500 is for a RT. 3,500$ for a BT. It's not older that 94-95 if it's a BT.
just the install, how much should i expect to pay? Well call Automotion they are used to do these kind of swaps (you can look for their phone numbers on the main site under shops in MTl)
If you have the kind of money to put a VG or RB.. why won't you consider turbocharging the KA24DE? It's been done several time! And great results.
If you have other specific questions, feel free to ask!