Why do you want the .50 OD ratio?
With my cars 3.93 rear axle I am looking to lower the highway cruising rpm below what I have now, at 75-80mph I now turn over 3600 rpm, the AR5 has a 0.73 ratio in 5th, my options with the 6060 are 0.74 & 0.50 5th & 6th, or 0.80 & 0.63. So the other option (0.63) will only lower my 6th gear cruising RPM around 300rpm, and the 0.50's 5th gear is almost identical to the AR5's 5th gear ratio so the car will drive the same in 5th gear.
I plan on using the car to drive to Kappa events around the country as we enjoyed the trip to Kentucky last year. The only down side of traveling with the Kappa caravan was our 19mpg cruising range, we had to stop for fuel a lot sooner than the rest of the cars in the group. with the higher OD ratio I hope to get at least 23mpg cruising on the highway, that small increase should enable us to make it to all the planned fuel stops along the way.
While I would prefer the other 6060's 1st gear ratio of 2.66 over the one I purchased 2.97, but even the 2.97 is an improvement over the AR5's 3.75 1st gear ratio. So 1st gear will be more useable in my car. With the LS2 low end torque is not an issue, I have been known shift the car into 5th on state highways at 60mph and not downshift when having to slow down to say 45mph, the engine does not complain when I speed back up in 5th gear.
Well back to the work, I don't know if I will get much done today it was only 8F out in the garage an hour ago, but I did spray the bolts down again and get a few "pre" conversion pictures. My car will differ from most due to the duel exhaust, the plan for this weekend is to remove the exhaust at the manifolds, and the intermediate clamps, unplug the O2 sensors and just get the front 1/2 out of the way. Then remove the stock backbone brace, and driveshaft. If that gets done I will remove the shifter and start to loosen the transmission bolts. I will also drain the Trans Oil. But all that may have to wait until the temps raise alittle next week.
You can see that I have the car parked over my pit. I may make it over to my buddies house to borrow his trans jack, or just break down and buy a cheap harbor freight trans jack.