Can anyone confirm that the M1028/M1008 were fitted with 1 1/2" rear spring shackle bushes please? I intend to replace all of my M1028's (military Chevy K30) bushes. Because they're so badly perished and I don't want to be off the road for any length of time, I would prefer to have the replacements on hand during the tear down. Without disassembling the rear spring shackle, I found a bush that projected more on the driver's side. If I measure what looks like a steel insert surrounding the bush in the spring eye, I get 1 1/2" and about the same for the perished rubber I can measure in the bottom of the shackle.