cheap monroe springs were far too hard and did almost nothing, the saschs springs massey used are far better and do have features which make them more expensive, Case dampeners are a lot cheaper but slightly longer, if u are going to modify anything could try them. Not sure how they will feel. I paid $450 AUD ea for saschsLooking to fit springs, but a little frustrated that spring and dampers for truck cabs can be bought for £50, yet massey ones are £ 250 each.