what he said is a pretty basic thing, it will work. a t25 is to small for a ka24, unless your looking for lightspeed throttle response +not to much power.
do things right the first time and youll have less problems down the road, you should save up for a enthalpy tune, its what will save the engine and keep it running right

 

ok thanks i'll keep my eyes open for a t28 and look for others in the meantime. Also, im going to wait on exhaust cuz if i run 3" without the turbo, i'll lose power, right?

 

technically you'll gain power because the exhaust gas is leaving faster, but make sure you have some sort of back pressure I.E cat, muffler, w/e just not a open pipe or your risking floating a valve

 

ok so its safe to go with a 3" catback system? good cuz that'll be the first thing to go onto my ride. Update on the jeep- 10 calls and not 1 good offer yet. Flakes...