Apart from the lack of references, other concern I have is if the gun mantle width "as is" for for the missile gun would be enough to accomodate the trunnions for the 120mm gun.

I

Apart from the lack of references, other concern I have is if the gun mantle width "as is" for for the missile gun would be enough to accomodate the trunnions for the 120mm gun.

I agree - the trunions on the Leo2 aren't any wider than on the KPz70, so other than wanting a bigger hole for gun removal, there'd be no need for a wider mantlet.

However, I do wonder if they'd have developed a different mantlet piece more akin to the "clean" shape of the Leo1 on any production models of Keiler. The KPz70 cast mantlet is very "American"-looking in shape, and could easily be made much simpler with a little effort. (And a smoother mantlet would allow better surfaces for add-on armour upgrades...)

The trouble with both the KPz70 & its 120mm sibling is they never got as far a series production, so the field is wide open for "What If" changes. (I've not seen any pics of the 120mm gun in place on a KPz70, even though it looks like a half-sectioned one is displayed next to the Munster KPz70.) Do we know if the Keiler would have retained the auto-loader? Or would it go back to a more traditional four-man crew?

[Edit: Don't forget to remove the missile guidance box on your Keiler! (In front of the 20mm gun pod...)]

So it would be a matter of the time frame whithin I'll place the model... I may stress the operational life of my Kpz.70 well into the seventies...