got the king running today and went for a couple of laps round the property,at 30 mph hit a rut and nearly hit the roof!it bounced like crazy so i reckon some brackets off the bottom of the spring shackle and run some tube shocks up to the frame.just the front-the rear is probably not worth it you wouldnt budge that spring pack with 5 ton on it!!
thanks for the replys everyone.