Just got the front radiator shroud installed. The cooling system is now 100% complete.
There are precious few photos on the internet that show these style of shrouds and nothing that show how they were mounted. I'm not positive, but it could be that the originals were chrome plated steel and there was a through-bolt on them that went through the mounting hole on the bumper and the bumper bracket like how over-riders are mounted. What's available now is only fiberglass copies.
First I had to spend a fair bit of time trimming and sanding the somewhat rough fiberglass shroud I got from a vendor in Europe. To mount the shroud up against the bumper, I took a length of 1/2" thinwall tubing and cut it lengthwise into 3 pieces. I welded the ends up and ground a curve into the ends and hammered a slight curve in the pieces to match the curve on the shroud. Then I took some M5 bolts and ground a curve on the heads and welded them onto the back side of the tubing pieces.
After that I made a couple of shaped pieces from 14 gauge so that I could use two M6 bolts per side to mount to a bracket attached to the bumper. The brackets that attach the bumper to the body are from an early 600. They're made to heavy gauge steel almost 1/8" thick. Fiat later changed to bumper brackets made from stamped steel and I couldn't make them work to mount the radiator below them.
I used stainless steel carriage bolts to mount the bracket to the bumper which is why the hole is square. I used some thin pieces of gasket material between the bumper and the brackets (the flat ones with a square hole) to protect the chrome. The radiator hangs off the bumper brackets with vibration isolators, sometimes called a bobbin. The radiator is an original Abarth item. I had a rad shop install a bleed/drain valve I salvaged off an old 600 radiator. (The yellow cord below the rad is for the battery maintainer to keep the AGM battery charged up.)
I painted the shroud with 3 coats of single stage urethane. When I went to the auto body paint shop, they asked me what color I wanted. I said I wanted it a light silver metallic. I pointed to a car out in their driveway with something that would work and said "kinda like that car". Turns out the color code is for a Chrysler...
Only things left to do are the gauges and rear side windows. Then it's time to fire up the engine for the first time and if it will move, I'll get it outside and take it for a spin around our circular driveway before getting it licensed and hitting the open road. My plan was to get the car read for the annual local father's day Italian car show. I very much doubt that's going to be on this year.