hey guys going stage 2 going to install 207mm crank pulley, heat exchanger and thinking of going with cts test pipes then tuning stage 2 with crackle. Any feed back on those test pipes? i was told they are 500 bucks plus what ever the install is and transmission has to come off to get into them. After that will save up for meth injection with ported blower then i am done cause after that its 9000 dollar supercharger swap and built motor that i have no desire to invest in. Thoughts? thanks