if going boosted I would just beaf up the car. 31 spline axles, gear it for the intended power level, rear control amrs, subframes, transmission, clutch, forged pistons, rods.
The reality once you go boosted you stock heads, cams, exhaust are all still good to 500hp+ with enough boost and the right intercooler. the rest of the car is not.
for example I am going to get the KB intercooled kit eventually. I can go to 14psi and like 500hp with just that kit. my stock rear, clutch, rods, pistons, tranny proably would not like that. so I did the rear, will do the tranny and the clutch next. will probablay try to run the car to 100k to 120k at 9spi and then do a forged motor if it lives that long then run 12psi or so.