WOW...I would be very happy with that. I am only getting 16 mpg on the highway at 65 mph. Around town I only get like 6 mpg or so. I am really considering the Gear Vendors overdrive, but not sure they can handle the HP!
They fairly strong all depend on what kind of abuse your going to put it though.One of my sons freind had one in a truck that had 435 hp and pulled it it did alrite.
I checked mine on the last road trip and I got between 15.5 and 16. That was pulling a 13.5k pound trailer though. I had the valet on and was taking it pretty easy at 65-70Mph the whole way.
I would like to have one in my old ford but they don't make one for devorced. don,t have adaptors for my 10 sp.My over drive is only .80 my rearend is 3.54