With the Ka you will have heating and internal problems out the ass! So for a nice setup with the ka without it going kaboom you will have to get new internals, rebuild and the whole nine just so it won't go kaboom which = A nice lil piece of change$$$! Just my opinion but the sr or even the ca is well worth, you just have to shop around for the best prices but if you do plan on sticking with the kaT setup i advice you to talk to Eric over at E&E motor.. You can go to his site http://www.e-emotorsports.com! Good luck!