The spending begins...
Stock transporter suspension is a combination of crashy/rolly and lurchy, leading to a sort of whoa, whoa, eek approach to tight corners and blurred vision when traversing potholes.
Fitting 20" wheels makes the van look like a donk on stock suspension which is ok for a swamper but less so if you want your van to simply look cool and handle better.
Fitting shorter springs with stock shock absorbers will make the van handle more like a car but one with rock hard crashy suspension.
Fit B14s regardless of wheel size if you want predictable genuinely normal car like suspension and take the fear out of fast tight corners... helps with the blurred vision on our broken roads too.