4 Vs 5

833OD is 1:1 in 3rd, same as an auto (without the torque multiplication of a convertor), OD is .073:1. Tremac 5th (OD) is close: .64,.68, or .82 OD. Sounds like alot of money to get an extra gear between the OD's 2 and 3rd.
OD 3.09 1.67 1.00 .73
5sp. 2.87 1.89 1.28 1.00 .82

Doug Nash 4+3 is basically a T-10 with a hydro-electric activated overdrive on the end. Nice idea, crappy OD.