Setting up for rear
 

I got the idea down, but my situation is that the truck is just a frame right now, and clearly I need to get the CoG to get my IC and such, my question is should I just make my triangulated 4link adjustable ig: upper and lower frame mounts have a couple mounting holes similar to the prolink setup or should I weigh a truck that is similar but stock, so most likely a couple hundred pounds more and get it close?