Which TFI module do I need?

The gray one. I read a while back where TMOSS explained it on Corral.

http://www.corral.net/forums/showthread.php?t=623314&highlight=black

I would call Summit and verify the part numbers. Two catalogs I've seen list the 35368 part number as belonging to an AT. Summit may have inadvertently switched pictures. Besides they are going to place your order by p/n and not picture color. Kind of dissapointed that Summit doesn't list more detailed application info.