tesa - I haven't found any vendors offering replacement clips for 3/4-1 ton wheels, but there is an old thread that I think may offer you a solution using the shorter 1/2 ton repop clips,
Check out this
first reply post by Denny Graham as well as his
second reply post that provide details about his method of adapting the shorter 1/2 ton clips to work on 3/4 and 1 Ton rims.
Not all of his previous picture links about the topic in those posts seem to be working correctly, so here are a couple of direct links to one of his many galleries
with a starter picture, followed by this
hub cap clip modification completed picture, demonstrating what it looks like finished.
The details on the spacers he used are listed in the 2nd reply post linked above. Perhaps this will fill your need???
Best of luck!
