when you cut off the driprails cut a couple of inches at a time tack weld every couple inches, repeat do not weld up fully use small tacks away from each other untill you have it completely welded to keep from warping, do not use epoxy and make sure its completely welded to avoid any shrinking.

Thanks for the advice. I'm still trying to decide if I should go the grind/weld route or make trim pieces like on 57CUDA's Camaro.:)