Diesel to Petrol Engine swap.

My friend has a few kangoo vans that are converted to 172 engines the same as mine, and the details are just updated with the dvla as you would with any other conversion, no tests etc needed
Then when I went for my next mot, the tester updated the fuel type on the mot as it was still down as a diesel

Thanks for the advise chaps, would the same apply if I wanted to fit an engine with carburettors or would I need to stick to a similar aged engine to the pick-up, and keep it fuel injected?

I think the engine swap DVLA implications were covered on another thread and went something like;

You need to provide proof of the new engine identity, receipt and vehicle i.d. it came from iirc.

You could fit an earlier engine and it would mean you only had to pass the emission test for the age of the engine. This may have changed but I fitted an old MK2 cavalier 1.6 to a later Astra. I was going to fit the engine in something newer again but it was just too much hassle as anything much later use the engine ECU to control the dash.
I had proof of where it came from as the Cavalier belonged to me. Best check the rules to see exactly what it said but it was just a case of the MOT tester changing the type of emission test.

Whatever comes along cheapest. But it will be something with a separate chassis like a ranger, hilux, l200, navara, y'know that sort of thing.