IS that screw all greased up on the right side of the pic a thrus bearing? Is that what you adjust and use to hold it all together? Instead of changing the rear pod. Maybe you should go for a newer rear axle setup. I put a IRS big diff on my old Agitator and it worked alot better. Im almost positive the Tbar mounts are the same so you should be able to replace the rear pod with newer stuff but you might as well buy a new car then for all that trouble. With the 12L4 release alot of 12L3's are for sale. I tried to get my old Agitator going this year just so it wasnt wasting away on a shelf and I could have bought a new 12l3 for what I spent in parts and time trying to get it going not to mention all the frustration. The most I would do is replace the axle so it could also be used on a newer car as well. My new axle fit in my used 12L3 perfectly and the agitator is back on the shelf where it belonged all along.