Any advise on what are the best spring ratings to use on the front. Current springs fitted are to short, need to raise the height for clearence etc. so i know i will be looking for 10/11" but what pressure !
Steve

Normally front springs are in the range 170 to 230 lbs/in --- depends on the engine and how hard the rear springs are.
Is the car hitting the bump stop or is is a just ground clearance problem -- if its the latter you might be better altering the shocker/spring mounts.

see picture in this thread http://www.locostbuilders.co.uk/viewthread.php?tid=24124