Although there have been a number of complaints about the Hot Bodies shocks, I happen to think they are just fine. I have the threaded version, but I know they make a non-threaded version.
They run about $100 and come pre-assembled. So far they have served me well.
New Era Models sells a set of upper A-Arms that allow you to use T-Maxx style shocks. This means for a bit extra, you can run any flavor of upgraded T-Maxx shocks also.
Before any of you other knuckleheads jump in and winge about suspension travel, the upper A-Arm mounting of the T-Maxx shock does not limit the travel...they were designed for parts commonality and the throw is the same or damn close to it.