In the process of swapping in an 11.5 out of a 2003. I will post some measurements once it is complete. 3 to 4 weeks out.
Grabbing some perches from off-road design.
Just be aware, if you are looking to build up the 11.5, it is costly.
I grabbed an 11.5 FF out of an 03 Duramax. It has disc brakes. $600. It is going in an 99 Suburban 6.5 with an NV4500. Yukon 4.56 with a grizzly locker. I can post measurements of spring perches and shock mounts if you would like once its completed next month.
I think its well worth the...