As stated above. Contact Dave at AJPS a.k.a truenosedan for suspension.
And have a search around about turbo 4ag's. I know there used to be manifold and turbo to suit a 4age on ebay. Not hard to turbo at all. Get a 4agze, put manifold on as well as intake plenum, run oil lines and all the other shit needed.
AJPS can supply some customz front coilovers and some t3 shiznit for the rear, Dave is a whore bag but still the recommended seller on here.
Manifolds are on ebay, Turbos are easy to find, fittings etc you can just buy off the shelf and maybe just a touch of custom fabrication will be needed for shiz like intercooler pipez.
If you have a huge-o wad of cash throw it at lawson and he could hunt all the shit down for ya and make up some kind of package...
Hey mate, doing something similar myself and done a little research(turbo & suspension). Drop me a pm if you like and I'll fill you in on what I have found so far
As everyone has said - the info is around, it just takes time to accumlate it all, put it together and make your own informed decisions based on everyone else experiences. So far what I have found with 86's is that there is no simple answer to any one mod - lots of options with varying degrees of success and cost!