I am a little out of my league on this one, but how about a world class T-5. Do a search on T-5s. There are a several different ones out there and the shifter location makes some of them impossible for us to use.
Also, check out the post titled 23 MPG..I think it is in the greasy spoon. sounds like someone is having good luck with a 700r4 behind a 350 with a 3:90 or 3:73
