Hi Everyone, Am new here and was hoping that someone could shed some light on my delima? I was given this CJ3 from a family friend that has since passed. My promise to him was to get it running & drive again though before this could happen... he passed away. So this has become more important to me now. The CJ is somewhat of a "Frankenstein" of a build... CJ5 frame, 48' Tub, 48' axles, Chev. S-10 V6 Was stored in the rain for 20+ years in his backyard so engine & trans was full of rain water..! Pulled engine & trans. out... rebuilt engine...now the T90 & DANA 18... The T90 was absolute "garbage" case included as it was cobbled together with some crude adapter arrangement & full of water. Purchased another T90 ( was told it came from a International 800..? Here is where it gets weird... I needed to change out the Input shaft to the longer one, ie., GM ( Omix # 18880.09 ) Pull the Main-shaft assembly out, replace the Countershaft with the correct tooth count for a 18T Input. Countershaft ( Omix # 18880.22 ) I noticed there are two different needle bearing callouts for the Input to Main-shaft connection. One bearing diameter = 0.156" Other = 0.218" Here is the weird: GM shaft measures 1.205" bore diameter versus the original shaft bore at 1.218" I measured the old input shaft ( GM shaft as well from the junk trans ) = 1.205" also If one used the 0.218" bearings would net a bore diameter = 0.769" ( old Main-shaft measures = 0.760" ) Using this combination would yield a 0.009" loose fit..? Using the 0.218" bearings would yield a bore diameter = 0.893" The diameter of the purchased transmission main-shaft = 0.905" ( ??? ) I am curious of what T90..? Utilizes the Main-shaft diameter of 0.905" versus the 0.760" I have on all T90's I have. I need to use the GM style Input shaft as I have already designed and machined up the correct adapter to mate the T90 back onto the S-10 v6 motor. Sorry for all the wording....anyone out there that may have an clue to my delima? I have ordered the standard Main-shaft but really did not want to transfer all the parts to another shaft. Your help would be appreciated..!