My '60 BN7 is running an unidentified Toyota 5 speed, which is very nice indeed. However, the engine is turning about 3000 rpm at 60 mph. This suggests to me that my box came out of a pickup truck rather than the Toyota Supra (etc) often mentioned for use with the Smitty Toyota conversion. Lots of people have remedied the high rpm issue vs. speed issue with the 3.54 ring and pinion gears from Dan Lempert, and the cost I was quotes was just over $600 currently. A bit of inflation there. My question is what should one expect to pay to have the new components installed in a Healey? I watched as some of our AH club members pulled the axles from a car in preparation to remove the differential internals, which I understood were to be replaced with the Lempert bits by a professional because of the critical gear fitting required. I think getting the differential out and back in is less challenging than fitting the new components. Any experiences?