The 4G Awd TL J pipe does fit our cars ive had it on mine when I was doing my buddies J pipe. I built mine instead of buying cause I can the difference is the TL one is 3" and the cat flange sits further back compared to the RL one.

The crank pulley will not make you loose torque ! You will loose a tiny bit of momentum in the Crank swing but very minimal due to its small foot print. Now changing a Flywheel on a Standard car will cause you to loose torque .

The UR crank pulley is a nice piece ive install 6 now on the J series motors now over the years and a bunch on other 4cyl-6 cyl cars with zero issues.

The crank pulley makes the car fell lighter and more responsive its a simple mod to be honest, just getting the factory bolt off can be a bitch.