To put a McMillan or any other plastic stock on a Kimber would be like marrying a supermodel and then removing one of her front teeth and having her breasts removed. Shouldn't be done.
I love the basic American classic stock as much as anyone, but
for some shooters like women etc the factory Kimber handle is a POOR design
The grip is too open for smaller shooters to achieve good trigger reach and there is not enough drop at the heel.
A trim Monte Carlo stock would be much more comfortable for those folks. Many of which would like the light weight of the Kimbers but would like a more comfortable stock.
There is room for many styles- even Cooper offers a Monte Carlo rollover stock.