What chassis have I got ?

I don't buy into the idea that shorter vans have less need of levellers.  It's true that the front wheels or front jacks, or the rear wheels or rear jacks, need less elevation on a short wheelbase van than on a long wheelbase van to level it fore and aft but it still needs to be level fore and aft.  The length of van or wheelbase has no bearing on side to side levelling which we find more important than fore and aft levelling.  

I think you will find that most people who have levelling jacks, and it's a growing number, speak well of them.  I particularly like being able to tip my van to the offside when out of use to improve drainage and to get all 4 wheels off the ground with the parking brake off.  For the first time I am able to inspect the tyres properly and remove stones from their tread by spinning the wheel around.  If the van is out of use for a while, I no longer inflate the tyres to their maximum pressure or worry about sidewall damage.  Removing or changing a wheel is a doddle as is fitting wheel covers and it's easier to get under the van for maintenance. Cleaning the alloy rims is even easier.   

Their only drawback is cost and finding space for the hydraulics if going for that option.  This is why I went for the cheaper all-electric Autolift 4, which so far and touch wood I am very happy with.  Jack elevation is generally less than the hydraulic systems but its good enough for shorter vans like a Nuevo.