I am currently looking at transmission options for my blown 2004 GT-P. It still has the stock standard BTR 4 speed auto and obviously that's not going to last for long (I think the only reason it is still living is because the car has only just clocked 16,000 kms). I am pretty dubious about getting the BTR rebuilt as I have heard many mixed results and ultimately I would prefer it to be a 6 speed auto if I go the auto route. I know which path to take if I choose to go 6 speed manual but I am not sure on what options to consider if I go auto. I am aware of the obvious choices - C4 with gearvendors overdrive or TH400 with gearvendors overdrive but after having a modded F6 ute with the ZF 6 speed, I fell in love with the ZF box. I know retro fitting a ZF to the GT-P has its issues hence why I am looking at other 6 speed auto options. Does anybody know if the TCI 6x Six Speed Transmission (http://www.tciauto.com/tc/6x-six-speed-transmission-package-small-block-ford-bellhousing-paddle-shifterhtml) rated to 850hp will fit? ie: trans tunnel clearance issues Are there any other options? Any feedback is welcomed. Cheers, Luke G