You'll probably have to call up keisler for info about their new trans offering. I don't think they have pricing for it on their website yet.

The factory 833OD, the Tremec TKO, the Passon 4sp OD gearset and the Passon 5-sp are basically your other alternatives. If you don't like those choices you could always do a low first gear, Non-overdrive 833. One with the 3.09, 1.92, 1.40, 1.0 gearing. The lower first gear will get you out of the hole faster so you could run a numerically lower rear gear and not do too bad in the acceleration department and avoid those gear spreads you say you hate. A 3.09 first gear 833 with a 2.94 rear gear would equal out to pretty close to a 2.47 first gear 833 with a 3.7 rear gear.