The replica front grille, side badges & rear lettering are all good steps in creating a good-looking tribute car as you're doing. Even better when these items are applied correctly on a car as beautiful & well-kept as yours is. But seeing as how the 850-based Abarth cars never had any type of Abarth ID tags on them, installing a fake tag will only make the car look foolish (my :2c
. Why cheapen all the hard work you've done to make your car look good & look (reasonably) like an OTS by installing an obviously-fake & inappropriate tag like this? :confuse2:
"Disguising" your 1050 engine just a bit more using a few Fiat 850 bits would help to give it an older "period" look, as well. I see you have a block-off plate where the 1050 fuel pump would normally be mounted, so I'm guessing you'll be using an electric fuel pump? If so, swapping your 1050 timing chain cover with a regular Fiat 850 one would get rid of that big ugly fuel pump mount bulge at the front/left corner of your engine.
Removing the coolant tube from the front/right corner of the cylinder head (above the generator mounting studs) & plugging the hole with a hex plug (or welding-up the hole) would also help get rid of (or at least reduce) things that would normally be out of place on an OTS engine.
With just these 2 minor modifications, your 36DCD/manifold & OT1000 sump (& maybe a nice exhaust/header system) in place & no inappropriate badges/emblems/tags in sight, a quick glance into your engine bay would have things looking fairly appropriate for an OTS or OTSS tribute car (the only obviously-noticeable difference being the oil filter on the side of the engine).
Do you also have an "OTS" rear script? (they're elusive)