You’re probably aware that Elite do a MUNGA in resin; I have a couple. CMK also do one but sans canopy and infuriatingly, the spare wheel.
Schuco do a ready made VW 181 in 2 versions ie with and without canopy; I do have one as it was the only game in town despite the huge expense (115 Euros or thereabout). That said it’s a lovely little model. I’ve earmarked it for a BAOR diorama, but as always with my projects, not any time soon!