Okay I recently mixed some gears on my fwd transmission build and it turned out very successful. I ended up using 1997 1rst and 2nd gear and 1990 3rd and 4th gears the transmission turned out absolutely amazing shift quality was awesome everything was cryo treated , shot peened and wpc treated I have going to start another fwd project later down the road. Now that I have an Awd project I want to do the same thing. I want to use the 1990 3rd and 4th gears in my current 2g Awd transmission. I have been doing a lot of reading and found that there are a few more items to try and match so as to keep all gear ratios matched between transfer case and transmission than the fwd gut swap. The current Awd tranny in the car is 23 spline with matching transfer case and the 1990 unit is 21 spline in which I don't have a transfer case. I will get the numbers off the awd tranny and post them just so that we all know what year 2g awd tranny I have. I know Tim has a lot of information on this for he is the one who let me know exactly what to lookout for on the fwd gut swap. Tim if your input is greatly appreciated. Also let me know what center diff I need to send in to you to have the 4 spider machining done. thank!