It's nice to see other machine heads on STEEM.
I've done engine conversions before on other vehicles. Adapters are expensive and most engines are inline 4 which makes fitting the engine difficult. Unless you really love your Kombi, I would recommend finding a more powerful vehicle.
I love God and my family more than my VW kombi hahaha. What I want is to adapt the engine to make it more reliable, Boxer 4H engines (engine air cooler) suffer from axial play and oil spills. it is said that the Vw do not vote oil but they mark the way,
I want to adapt a 4L engine similar to that of Vw kombi 2013.
My kombi has modified it for 5 years in the food truck style, and I am preparing it for a project for the children of Caracas Venezuela, but I have to make it mechanically reliable.