In my list would be:
Proper Suspension
Good set of Tires
LSD
Clutch
Exhaust
Cosworth Intake Manifold
Turbo
Don't waste money time on a XCAL2 now, the turbo kits come with an XCAL from FS and you will not save the cost of the XCAL off the price. They may knock off 100 bucks, hardly the 400 you spent on the XCAL to begin with. My advice would be to wait on any tuning until the turbo is done. You can do regular N/A mods until then. And yeah what naz said...don't go into debt for this.
Proper Suspension
Good set of Tires
LSD
Clutch
Exhaust
Cosworth Intake Manifold
Turbo
Don't waste money time on a XCAL2 now, the turbo kits come with an XCAL from FS and you will not save the cost of the XCAL off the price. They may knock off 100 bucks, hardly the 400 you spent on the XCAL to begin with. My advice would be to wait on any tuning until the turbo is done. You can do regular N/A mods until then. And yeah what naz said...don't go into debt for this.