VW campervan engine - advice please

[ferfer]

I bought a 1978 VW bay campervan and have been plagued with engine problems - looking now to put in third engine and starting to lose heart as well as money. I would just like it to work! I don't mind the odd breakdown but not the number I have experienced. So looking for a reliable option with any thoughts welcome re manufacturers / mechanics etc. Also thinking about whether the Subaru route is an option to get better reliability? I'm female and have zero mechanical skills. The body work is in very good condition, it's just the engine that I'm at the end of my tether with.