Some time ago there was a post on Moparts which had drawings for the plates to build your own cal trac type bars. Any one know where to find those plate drawings?

not those ones but I have some diagrams and measurements + some similar instructions from a hot rod sight or somewhere PM me an e-mail addy put it all together and your off to the rodeo. my friend build his from them

I could be wrong, but the Caltrac system looks a lot like the old "leaf link" suspion that Dave Christie put on Ronnie Sox's car in early '70s?

I think its similiar but its below the spring instead of above it. From what I am told the leaf link was rough on springs.

http://www.hotrodsandhemis.com/Traction.html

Looky here:

My thread on this subject

I have been very happy with mine thus far.