GAZXR6,
Just to give you an idea, here are some of the this you may need to do to make an Xr6, an Xr6 turbo. Bigger fuel pump, bigger fuel lines, bigger injectors, aftermarket ECU($2000-$3000), turbo, custom exhaust manifold to suit your turbo, intercooler, piping, forged pistons, new cam shafts to suit your turbo and forced induction, lower the compression, probably bigger oil pump, i think the turbo uses a bigger stronger gearbox(probably diff to), and performance clutch to suit, new exhaust, engineers certificate to say it's safe and legal, thats just off the top off my head, not saying you would need to do all of these things, but not far off it.
Sell it and buy a turbo, I think we should all be grateful that ford offers a turbo model in the BA range. Doesn't happen very often.