An Extra-Wide Truss Head Phillips Screws will do the trick. Grind the edges to the width of the Trim.

https://www.mcmaster.com/products/screws/thread-size~8-32/phillips-rounded-head-screws/18-8-stainless-steel-extra-wide-truss-head-phillips-screws-9/

BTW: I double up on the Factory qty. Lays nice and flat this way.

Not to much to them. If i remember the Diaphragm is just a thin paper gasket material. Things mostly for show and no go.

https://packardinfo.com/xoops/html/downloads/SC/SL-VOL7NO24.pdf

Shipping is going to b fun. Custom Box or Create. Lets hope someone in PA see it and dose a drive.

What dose the bottom look like?

Was a foldable seal. STEEL sells.

BTW: Assume if ur car was a dark colored it was left rubberblack and if ur car was a light colored car it got painted body color. PARTS BOOK says to specify color

https://www.ebay.com/itm/265694651084

https://cwmoss.com/products/horn-screen

Hole (threaded) is for a fuse holder.

https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?topic_id=19156&forum=1

Get ya a
Optima Batteries OPT8010-044 6V RedTop

Id do a AMAZON Free Del

Make sure u shim it up so it dose not fall over. Was on a tour yrs back and one fell over - shorted out - and started smokin. No fire but it was thinking about it.

Heres something that will get u 33/34 boys scratching ur head.

https://www.ebay.com/itm/255966704010

1934 EIGHT Inst PL. with what appears to b the same Dark Brown on the vertical line pattern as u find on the Su8 Herringbone. Looks FACTORY to me.

--DID THEY RUNOUT OF HARINGBONE PLATES AND USED AN EIGHT AS A SUB???
--WAS IT A MANUFATURES MISSTAKE??? and thus carried over into a production car.
--HAS SOMEONE PAINTED IT BUT WHY

For Curiosity Sake
Was the Carb Silencer/Air Cleaner on the 32 eights Standard or Optional ?
Cannot find any lit saying one way or other.

Maybe this ?
https://www.ebay.com/itm/134403834991?hash=item1f4b17c46f:g:8N8AAOSw2e9judi0