Technical Tri-5 help needed

Hi guys ......hoping someone can help with a query on my 57 Chev

My car doesn't appear to have these brackets ....or even the holes for mounting them to the fins , are the brackets necessary to hold the vertical stainless in place ?

Also ....I can't ID this rubber grommet ....any help greatly appreciated

Fleet-master

 

Yes, the brackets hold the vertical stainless on.
If your quarter panel is new, it must need to be drilled. here, the pointer shows where the clip made a rub mark on the stainless. The bottom of the piece is retained by two more screws, still holding a broken tab here. This piece is ruined. note how someone bent it so far the spot weld on top pulled through. finally is the fin top clip, short 150/210 shown. Pins locate in clips rusted beyond belief here

 

Engineer change. My understanding is the clip was added later production. Repop are available. Just added one to a 150 I'm working on.

 

Just guessing on the grommet but it looks like something on the firewall. Your picture has no size reference.

 

Sorry , my mistake ...it's around 3in across .....I thought firewall too , or poss heater unit?

 

CHEVY57DUDE , my car is a New Zealand new one , export from Canada ....with all original

body panels . As 325W mentioned it could be a production update , they are a good idea ....will have to make some I guess