I really can't comment on the accuracy of the kit until I build it.
The contents of the box are first rate. Light gray plastic. DS tracks. I have never used them and I will not here.
I will look at AFV Club for those.
No extras and I think no figs, but I could be wrong.
There is no evidence that there are sprues from other kits tossed in.
There is a great set of canvas mantlet parts.
Decals are for US and Germany.
I would say buy this kit, for sure.
The Patton experts will no doubt pour in with points.
I bought a second one, and the original commanders cupola times two from Slingshot.