cool, I just emailed him w/ a few questions, maybe you can answer them... on the site it said the LR (long radius0 was better flowing, but you need custom exhaust... well i have a custom 3" DP, tht goes to my greddy SP... what other fabbing will I need tht he mentions?
I bought the long radius unit from him. Made a freaking HUGE difference in low end torque. You do have to fabricate your own down pipe though. But he includes all of the bolts, flanges and collector. Well worth the money.
I have the LR elbow from JBL. Made a huge difference. Boost comes on much quicker and harder. Besides the performance increase, John also threads the O2 sensor mount so you can use a $29 Ford sensor instead of the $250 Toyota sensor.