No doubt a lateral restraint will help locating the diff, a worthwhile upgrade in any case.
I have read somewhere that the twin tube konis aren't the best at controlling rebound.
Danny m on page 2 of the below link talks to the problem he was having with racing an escort.
http://www.rsmotorsport.com.au/forums ... c.php?f=25&t=377&start=20There maybe something in it? Or maybe not.
For reference i run bilstiens, about 200lbs/in reverse eye leafs, urathane bushes and with the yoko a050s i generate around 1.5g lateral (maybe even a little more :)
I have the dyno printout of my rear shocks if you are interested in a couple of points off them for comparison. Drop me a PM if interested.
Bryan