Thanks for putting me in the database. Super Nova means super heavy bumpers right? I am amazed at how closethe computer comes to what actually happened. The th200 is about what I expected faster ontake off but about the same in the 1/4 mile. I crossed the" Finish line" in 2nd gear and they are about the same ratio. I am still thinking this over, thought about a th400 with switch the pitch to get the best of both worlds. Maybe someone will have a 3.08 rear end cheap. Iwould do alittle better than the 2.73 that I have. Jay 6155