Upgrading the shocks with the sportline springs will make a positive difference to the ride quality, no doubt, but there may be better options within your budget that give a similar amount of lowering.
Drop us a PM or email us
Chris@thevancave.co.uk and I’ll go through some options with you (after I ask loads of questions about how you want to use the van, the spec of the van etc etc to make sure I get the recommendation right).
I have a couple of options for shock upgrades and several options for full coil over kits so there’s definitely something there that would suit you.