More clamshell pics, Here they are... Options

[marks914]

Thought I would start this thread over,
I am installing Brad Mayeur's Longitudinal clamshell kit. It should make the car MUCH stiffer.
Specs:
3/32 thick, plug and seam welded to the existing longs, and ties into the suspension console

Mark

[SpecialK]

The PO of my '73 also installed Brad's stiffener kit (was going to be a V-8 conv.), but instead of plug welding the holes, he drilled 3/8" holes completely through the longs (including the heat pipes (IMG:http://www.914world.com/bbs2/html/emoticons/dry.gif) ), inserted 3/8" threaded rod all the way through the longs, used large washers and nuts to "sandwich" the parts together, tack welded the washers to the inner longs and outside stiffener, then tack welded the nuts to the rod and washer to keep them from loosening, and ground off the excess threaded rod..........and after a full 6 years of sitting on jack stands, there' been no visible signs of sagging (IMG:http://www.914world.com/bbs2/html/emoticons/rolleyes.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif)

After seeing the method recommended by Brad and others, I'd have to say that the PO was really thinking (unusual for PO's). It literally ties the inner and outer longs together pretty effectively. Now, if someone was to use this threaded rod method in conjunction with Mark's inner long stiffener kit, you'd end up with one bullet-proof tub!