Hey guys i "MIGHT" get a 1999 Grand Prix GTP and the guy im buying it from has these mods in it (Headers,ported blower with a 3.2" blower pulley,Comp XP-Cam with upgraded 105lb springs,LS1 throttle body,85Maf sensor,Cold air intake,3" x-haust,MSD igniton wires,Tuned,42lb injectors,Transmission shift kit ) he also has some other little stuff liKe to Keep the fans running longer and a voltage booster, transmission gadget and a couple little more things. Would you all buy this for 4,950??