will the power enterprise Xb supercharger work on the Xa are there any confirmed installs of a supercharged or turbocharged automatic Xa. What brand and pics would be nice. also what mods actually gain power since I installed a catback I lost tourque which sucks should have gone with TRD is the perrin pulley worthwhile. and does a cold air intake really make a diffrence over just a drop in TRD filter.