I don't suppose anyone has had a go at fitting Rogers bump stops to an ARP4, with coilovers instead of leaf springs, have they? When loaded my springs do bottom out, with quite a bang too. The alternative is harder rear springs, but that will harshen the ride too or get some longer springs and wind up the clearance a bit.
I can't see how they would work, the assisters clamp to the tubular rear suspension hoop (which the ARP4 has not got) and the rubber damper is designed to meet the rear leaf spring (which the ARP4 has not got).
To stop coilovers bottoming out you need some rising rate springs that become progressively coil bound as they compress.
