So this will be a clean but potentially expensive mod for the GT350. At the Mustang Roundup I asked if the Carbon Composite radiator support on the GT500 is the same as the GT350. Well it's not but it is. It bolts on but the difference is it has the tooling location for the hood pins. All 2019+ GT350's have the new radiator support. So if you have a 2019+ GT350 you have the ability to install the GT500 hood pins. The attachment point for the hood pins are already there and the hood even has stickers on the location of where to drill the holes. How cool is that? For those with older GT350's you'll need to purchase the radiator support or find one in a junk yard or on ebay. I believe the pins are the ones made by Quik-Latch but I'm not sure if there is a different part needed to attach to the radiator support. While at the Roundup I popped the hood of a 2019 GT350 and you can see the photos below.
Link for the Quik-Latch pins
https://www.quik-latch.com/
Link for the Quik-Latch pins
https://www.quik-latch.com/