Supercharger for sure. Although I recently read about the new Hellion turbo kit for those years. I think it was John Urist that put the kit together and they made some killer power with it. I think it was like almost 200rwhp over the base. Since your whole bottom end should be forged, as long as you dont have a crap pile of miles then you should be ok. Also they eventually blew the head gaskets, and that gave them an opportunity to toss on a set of new edelbrock heads that had been laying around looking for a host. Now that I think about it, they may have made that much power after they put the heads on. But either way, it was only like 6psi and they made an insane amount of power. But for less work, the supercharger would be the way to go. Dont have to do all that exhaust swapping and all.
__________________ 2002 Mustang GT- Mach 1000, 2003 SVT Cobra Polished wheels w/ 275/40/17 Goodyear Eagle F1, 5 spd, UPR Blue Thunder Shifter, BBK Chrome LT Headers, BBK O/R X-pipe, American Thunder Flowmaster Catback, FRPP 3.73s, Eibach Pro kit, UPR Chrome Moly Pro Street U/L Control Arms, UPR Full length SFCs, Accufab 75mm, C&L Plenum, Procharger P-1SC w/3 core intercooler, AFM Power Pipe, SCT BigAir2400, Snow Performance Water/Meth kit, Plasma Booster, SCT Tuned 406rwhp 400rwtq (UPR O/R X-pipe for sale) | 
Which is easier 
