Thanks cob427sc, Al_C, & Jim1855. I was going to use a pool noodle for the gap between the windshield and door, wrapped around the bottom of the windscreen. For the car cover, I had read somewhere to put a big beach ball inside the car before covering it, to help prevent the rain from sagging down the cover. A few plastic bags and some extra towels for sure will be in the cockpit. I ordered RainX and will coat both sides of the windshield. I don't have a hole drilled in the floor pans yet, and probably won't get to that either before the show. But it's on the list of "upgrades" for the future! Also, I was made aware (by a local friend also building a FFR) about the gaps between the back of the cockpit and the rear wheel well, right behind the seats. I probably won't have time to address that before the show, but it's also on the list of upgrades. I may just stuff more pool noodle in there as a temp fix, to keep some wheel well water from splashing in.

I haven't driven the car in the rain yet (heck, haven't driven it much yet due to waiting for the title/plate), but my other car is a Mustang with ultra-performance summer tires. I'm used to driving in the rain with those types of tires, so I'll just slow it down a bit and take it easy.