well... it ended up working out pretty well... but I wish I hadn't bothered pulling all that shit out of the engine bay; it was unnecessary!! I just took off the driver side wheel... and the hole/plug are just as accessible if not MORE accessible than from top-down..I'm gonna throw together a guide with lots of pics so noone has to struggle through this like I did.. lol
FS: 2.5" Test Pipe 25 shipped