[19Fordy]

Here's a few more photos that may help you design a solution. I made the alum. fan pulley back in 2014. BOB DRAKE now sells them at a fair price. Go to his web site.

Keep in mind each situation is different. My 8BA is in a 40 using wide belt 8RT water pumps and a Walker radiator. Make a mock up of your parts before you start taking your car apart.
My fan is 16 in. There are folks who have other ways of doing this.

Good luck.