Just a thought,
Now I know this isnt stock but it is a solution,Yrs. ago my brother had a 47' I think, International Truck with the crank window he ran all the time for 2 yrs. and he got tired of it leaking at the lower outside corners so he welded 1/4" studs to the frame and made as set of "L" brackets with a slot in them he mounted to the dash and when he wanted the window SHUT he would wind it closed and had a set of wingnuts in the ashtray he would spin on an sinch the corners shut...worked great especially in the winter.
Tim
