Can you weld a lift pad under your cage uprights where they tie into the floor? I haven't honestly had my car up in the air yet due time constraints and work. I think bad dog makes a weld in jack pad, should be a simple fab project though. Reinforce the floor somewhere near a structural cross member or frame rail with a thicker piece of plate or box to spread the load across a larger area than the lift pad, and BAM, now you have a quick reference for your lift point at the track as well
Edit: found the bad dog single point jack pads:
http://baddogparts.com/index.php?main_page=product_info&cPath=2_4&products_id=3&zenid=4b9a466dcb549c1891f0dbd2896e19ca