I guess I'll participate & keeps this one going also. There is another thread going right now on frame connectors also. The is what I did with mine. I have done mine a totally different way then everyone else. It was alot of extra work. But I am going for that sleeper look (if that is possible with a HEMI car!!!!) I want the all stock look. I cut off the rocker panels of my 70' Challenger & hid the 2"x3" tubing inside the body. I tied it into the transmission cross member body support at the front stitch welded along the entire body & into the side of the rear frame rails at the rear. I obtained an original set of factory E-body boxed in spring perches from an original HEMI parts car. Once I installed these the only way to tell the car has been frame connected is to look into the small square hole from underneath that is there to mount the rear leaf spring mounts. It came out awesome but was alot of work. The car is still on the rotisserie as of now completely stripped & there is no body flex at all.