After this big long fiasko of trying to get my CRX to drive (http://www.d-series.org/forums//showthread.php?t=60479) I need to know what it takes to modify my transmission or if it's even possible. I think as of right now what I'm going to do to get my newly purchased ZC (I think) transmission to work properly in my car is swap out the side gears in the differential. I've got a DX tranny with a bad 2nd gear synchro that I'm gonna take the side gears out of so I can use the axles. I was also thinking that while I've got the cases split, I'll take the 5th gear out of the DX and swap it into the ZC so I'll have a little better gas mileage for the express way but still have the acceleration of the ZC. I what I'm thinking possible? As far as I understand it the gears are interchangeable. Does anyone know of a good write up for swapping gears in d-series transmissions? Any and all help would be greatly appreciated. THANKS GUYS!!!