[Coldshot]

The reason for the 1/2" difference is because the normal cab bushings are pretty fat. The other bushings are thinner. The "C" brace thing under the cab where you mount to wont go over the regular cab bushing but the front bushings are thinner in girth so they fit into the "C" the "C" is 1/2" deep. I just used all front mounts under my cab from the poly bushing kit worked great.

I'll take some pics when ever I get home.

Long 14+ hr days never end I tells yea