what is the SL, what does it have, i know the VR-4 is a twin turbo, does the SL have any mods or is it like the stock? can turbos be put on it, like the ones from 3sx, so for all the questions, but thx alot for the help, and its a 93 SL 3000GT

The differences are, no all wheel drive, no all wheel steering (only the 1st gens had this anyway) and no turbos. The SL is a front wheel drive. The SL can be had with the same interior options. You can turbocharge an SL, but you need several parts such as turbo manifolds, ECU, intercoolers, motormounts, oil pan, among others.

It might not have the power the vr-4 does, but I love my SL all the same. I've heard some places that used vr-4's aren't as reliable as used sl's strictly because the people that owned the vr-4's before usually beat the hell out of them. But that all hinges on who owned them previously.