As this question has come up time and again I once laid four Xmembers side by side to see the difference. I dodn't lay an Ambo as I didn't have one, but I did have two Jav family and two American family Xmembers, both six and eight. First off, the Jav family includes the 68 to 74 Javs and the Classic-Rebel-Matador line. The American family would be your American, Gremlin, Hornet, Concord and Spirit. All are from 64 to 86. I think 63 is the same as 64, not positive. Spotting a V8 Xmember is easy as it will have two slots in the moter mount perch, the six will have a single hole with two small holes along with it. The secret is to look for the two slots for the V8. The Jav line will be wider than the American line, I think by about 5/8 inch. There is also a more drastic drop in the center for the V8 member. You can adapt a I6 Xmember to fit a V8 real easy. You will need the short motor towers if going into an American. With the motor towers and bisquits installed on the engine, lower the engine onto the six xmember perch. One bolt of the V8 bisquit will fit into the I6 perch. You can then sandwich a plate in between the bisquit and the perch, tying together the mount and xmember. I have done several of these. Weld the plate onto the Xmember with gussets for added strength. Any shop can do this on a lift, my first one was done by a muffler guy and never broke or tweeked. I haven't done this to the Jav line as there always seems to be a good supply of these V8 Xmembers floating around.......Russ __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com _______________________________________________ AMC-List mailing list AMC-List@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list or go to http://www.amc-list.com