I have a Surplus Kit here it’s their premium set up to suit a VT>VZ but can’t see any reason why it won’t work on the earlier models, Accuair E-Level controller and a new set of Coupe4 Struts modded to take the bags, I bought 2 kits fitted one to my Tonner then sold the Adventra before fitting the second.
Complete kit everything included, Tank, Compressor, Wiring harness, USB loom, Controller ECU, Height Sensors and Pressure sensor, poly line, air fittings, in cabin control pad, Solinoid block, AirBags all new ready to fit.
3x pre-sets, self levelling infinitely adjustable from the drivers seat.
Retail is $3300 I’m looking for $1900, can deliver in Victoria and will ship interstate at your expense, drop me a PM if interested.