Hey Marc, I contacted Buyers Products was able to get that measurement for you, and the distance is 2-3/4 inches from the center of the hitch pin to the gusset on the Buyers Products 2" Pintle Hook Mount # 337PM812.
For a compatible pintle hook and hardware use Pintle Hook # 337PH6 and # 3378520. view full answer...
I went to our warehouse and measured the Buyers Products 50 Ton Air Compensated Pintle Hook # 337PH50 to get the height dimensions. The overall height of the pintle when open is 12" and when closed is 9-1/2". I also took a measurement for the height from the center mounting hole which you can have as reference point if your recessed area already has the holes drilled. When open it is 9-1/4" to the top of the hitch and 6-1/2" when closed. I have included images below with these measurements... view full answer...
The centerline on the # BR27FR is going to be from the center of the hitch pin hole. If you draw a line straight out and measure the distance to the bottom of the hook that is 1". I have attached a diagram below for your reference. view full answer...