I can only work so much from memory! Thanks for looking those tracks up and correcting me Andrew!! Sounds like the narrow track SJ axle would be a good candidate for the 63-66 Classic/Ambo (58-59" for SJ vs. ~57.5" for the Classic/Ambo) and the wide track CJ axle a good candidate for the American (54.5" for CJ vs. 55" for American). The wide track CJ axles are most likely AMC 20s though. The only problem with swapping hubs is you need NEW hubs to put on used axles, and new hubs are hard to find. You can't put used hubs on another axle and expect them to last. Better to redrill the Jeep hubs. Most production cars used 3.5" backset on 7" wheels. The 3.75" backset wheels I ran were considered "custom backset" by American Racing. The 6" Rambler wheels I had at one time had a 3" offset, IIRC. Most of the older cars centered the disc in the rim, so the tread should be close to the flange to flange width of the axle. There were exceptions -- such as the Jaguar, but most standard wheels were centered on rear wheel drive cars through the early 80s -- at least for the plain-Jane wheels and tires. Styled wheels, like the Rallys and such, usually have an offset to fit it in the car. But the generic stock wheels are most likely centered. ----------------- Date: Thursday, December 14, 2006 02:05 PM From: andrew hay <adh@xxxxxxxxxxxxxxxxx> " From: "Swygert, Francis G MSgt 436 CES/CECM" <Francis.Swygert3@xxxxxxxxxxxx> " " It does state that "wheel to wheel" (mounting surfaces on drums?) width " of the narrow track Wagoneer (SJ) D44 axle is 58-59". The wide track " axle is 61-62", which would make it 2-3" narrower than a 63-66 " Classic/Ambo axle (tread width on those is about 63"), and that should " make it a good fit for an American. CJ AMC 20s are 50.5" narrow, 54.5" " wide track. according to my old stack of car&driver annual new car issues, rear track on the '65-6 classic and ambo is 57.5". rear track on the american is 55.5" and the hornet et al axle is the same as the early amx and javelin, 1.5" wider than the american. _______________________________________________ AMC-List mailing list AMC-List@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list or go to http://www.amc-list.com