Finally have a week of vacation next week and I've ordered some sumitomo tires 255/45/17 front and 275/40/17 rear. Also ordering a walbro 255lph fuel pump,kirban AFP regulator, new upper and lower rear control arms. Adjustable clutch cable kit from UPR. How much will the control arms improve 1/4 mile performance? Should I order a spec stage 1 or 2 or a king cobra clutch kit? With the mods i already have plus the 1s I'm getting I'm shooting for 13.5's-13.3's.