I recently purchased a new reproduction floor mat which is pretty nicely made, heavy, and looks good.
47-55 (AD) Floor mat link
It came with instructions for cutting the holes for pedals between the molded in dashed lines on the back, that was easy enough to do neatly. I gather this detail was not on the original mats, but is how they're addressing the holes on the reproductions, cut just as many as you need.

Problem is there are no guide lines for the 4 speed transmission shifter or the transmission mounted parking brake lever.
I have contacted the vendor and they don't have details on where and what size. The reproduction is a copy of a customer's original mat and they don't presently have an old/original one to measure. I don't have an original one to measure either.

I can guess at it, but I'd like to first ask and research and see what the original shifter and brake lever hole were supposed to look like.

Anyone have that info?

Thanks,
Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-