You're talking alot of cylinder pressure & heat build up. Also the fabrication time needed to install a turbo has to be considered. Induction piping & intercooler(another cost left out by the pro-/6 posters), custom exhaust, lubrication plumbing, & you wouldn't put all that into it without upgrading the rod & main bolts/ studs would you? A rebuild would have to be a given also. Forged pistons? Carb & intake manifold? You're not thinking about blowing it all through a little 1 bbl are you?
.