Well I watched the or should I say read the article on the clunk problem and all the rest. I was raised by a mechanic in his own rite. His father was a mechanic had his own shop in the depression. Worked on Model A and T's. He showed his son's the in's and out's. My father had a well drilling company and his cousin and he had a machine shop. They rebuilt diesel motor's and gas motor's. Line bored. Put sleeves in the block's. Shaved the block's. Had crank lathes. All types of work on that part of vehicle's. I was their every after noon from school and on the week end's. We never have called a mechanic out to work on our machinery. Like most guy's I have learned by trial and error. Also what I had learned working on my own vehicles. So all in all I should have loaded the axel drive gear's then tried to turn the input on the pinion. After lookin at the spider gear's and axle drive gears seeing no apparent damage to them and with out specks for them figured they where with in tolerance. But so have it they where not so hence you have the clunk. Just to much slack between the gear's. Now I could fix it but you can't get the part for them any more so it is trash. They could be welded up and ground to speck's to get the proper spacing but it is not worth that kind of work. When Racing my buddy and I tore every thing up that you could. Broke pinons off. Broke and twisted drive shaft's. Shattered clutches. Broke 8 blot main's. Twisted axels into. Destroyed bearing's. Destroyed motor's. What can I say. Experience is the best teacher. Book's can only teach you so much. I was told that experience is the best teacher. I have grease and beat up hands from working on car's-truck's and motor cycles. A long with all type's of machinery. So in the end the old story never assume any thing it will bite you in the ASS. Ok enough this novel wont be published. And an Old dog is never to old to learn new trick's.
Russ.
now it will take at least a case to put this in. Russ. 
Mark, new to this, so if I pull the 741 carrier (non-sure grip) can I install a 489 sure grip and not have to change any other bearings or axles? Thanks for any insite you can provide.
