I have a 1950 3100 with a 1962 235 6cyl. There is the well known problem of the fan being to low to cool the radiator. So I set it up with an electric fan. My issue is when the fan comes on it is very loud. I have no problems with over heating. I just hate the way the fan is so loud when sitting at a light or puttin through a parking lot. It my mind it just ain’t right. So I decided to do the 235 water pump relocation using the Dave Folsom’s adapter plate and a 50 water pump. I also picked 235 up a harmonic balancer with a 1/2 wide belt grove as Dave advises so the water pump doesn’t over rev.I took out the radiator today and got a better look at what I got to do. I was wondering if anyone else has done this conversion while the engine was still is the truck? The only problem I think I might have is getting the old balance off. There’s only an inch between the balance and the crossmember. Also there is no threaded hole in the crank to draw on the new balancer. And is this correct there is no bolt holding it on? Just an interference fit?