Tony have you tryed these people suggested in an earlier thread. One other company to speak to is Protech they also make custom shocks and spring set ups.
:thumb:
Hi,I changed mine 1 year ago with Gaz Shocks with 450lbs +9" length front and 225lb+8 length for the rears. With 2.2ID springs, with a chevy motor fitted. :thumb:
Replace the worn crap shocks.
Give Dave at Gaz a call.