Yep, it's on the list
but I think I'll go for the upgraded EGR first.
In reality, if I were doing a van over and a diesel engine was an option, I'd probably still go with Espar products but I don't mind the small propane tank and cooktop. I probably should have even installed a smaller tank. So far the tank has lasted a long time and for the price difference it seems to have been a good choice.
I just used the Airtronic for the first time since about March and it did fail during the first start but ran great all night on the second start.
I had a lot of problems with the Hydronic at first but some of it was user error. Ever since I started to run cetane booster in the fuel both systems have worked fine.