I'm now hoping the Alkett 10.5 is an easy conversion as I think it's just the casemate that's different
Once that's done then the 122mm is the Alkett with a new gun.
17pdr is on the back burner as it's harder than I though due to lack of info.
Free French MG version will be a pain of rivets...
Marders will probably follow as it a completely new casemate and guns
Civvi versions bringing up the rear.