Im trying to put my truck togeather and cannt remimber that goes in to square holes in the bottom of core support that the valane bolts to.
Thanks

 

Upper valance is 17A862 / Lower valance is 8188 - only used on 1961/65 F100/250 4WD, 1961/66 F350/750, 1966 F250 4WD

 

Thanks for the replys. I need to go to my computer and look my old eyes cannt see on my phone.

 

I got bored out in my shop and just welded some nuts in my core support.
I finished the tops with a flapper wheel and chased the threads with a tap.
all is good on it now.
I put my upper and lower and grill in and it looks good.
If I was smart I could attach a pic and show it off?

 

The idiot engineer who designed the core support and the attaching nuts/bolts for the grill and lower valance ought to be shot. What a screwed up system.