Does anyone have pics of the radiator core support mounting to the frame on a 53 F100? My diagram shows two rubber bushings that go between the frame and support but there are no existing mounting holes. I didn't want to add these if they were not there originally and risk throwing off the front sheet metal alignment. I don't remember seeing them when I tore it down years ago
Any suggestions?

 

Here is the best pic I could find of my radiator support.

 

I don't see the '53 in the Ford Illustration manual but this is where the holes are that I think that you mean on my '50 F2. I'm not sure how much different the '53 is.


Front are for 6 cyl and rear for V8.

 

They are a lot different. 53 through 55 have only two holes that are in line with the frame rails centered on the front crossmember. Sorry no pictures, I'm being driven down the road for the start of my vacation.

 

Two bolts attach the U-shaped radiator support to the frame. With the rubber spacers installed, the support can rock side to side. Rubber bumpers are also part of a correct installation. These bumpers limit this side to side rocking, and absorb some of the twisting forces that result from moving across uneven terrain. The best graphic I know of to illustrate the support set-up comes with the instructions for parts from Mid Fifty.
Instructions - Mid Fifty F-100 Parts

 

Here's a picture of the bottom of a 55 mount. But the mounting studs were cut off of this one. This shows the rubber bumpers jvmcc mentioned.

 

Those are bolts, not studs. The mount has threads built into it. Somebody cut the heads off the stuck bolts to remove it rather than fight with it in place. It will be easier to remove the bolts now.
If remember correctly the bolts are 7/16 fine thread.