I have a LWB T30 with STX with a conversion which isn't wildly heavy.
I also have a SWB T32 on KW V1.
Both are lowered 60-70 mm.
I understood them to pretty much be the same thing when Bognor Motors fitted them. (But rated differently for the T32.)
In my opinion, the vans are soooo different to drive. I don't know if it's because of the wheelbase length or what, but the T32 drives like an MX5 compared to the T30!
I hasten to add that this isn't the weight of the conversion as I noted the difference after collecting the van when it was a naked uninsulated panel van with coilovers fitted.
In my brief experience, I have foundthe STX much less stiff than the KV V1, but I am told this shouldn't be the case! What do I know?
Need to get
@BognorMotors to raise the T30 on STX by 25mm as it will need to tow. Shame as it looks lovely!