On my home from a road trip today, about 80 miles south of home and on a nice open, long stretch of highway with no traffic so I did what most of us would do and opened the throttle. Shifted into fifth at 80 mph and didn't let off till I hit 160 (fastest I've been in my car). This was the first chance I've had to really open the throttle since my mods. Over all, I'm extremely pleased with how the car performs, however when I hit 160 I left off the throttle and immediately the hood started shaking like crazy. I held my cool but it made me nervous as hell the hood would open and hit the windshield so I pulled over. Latch held it very well, the bolts and hinges are all tight. Everything feels and looks very solid. The part that was shaking was at the rear of the hood, closest to the windshield. On the remainder of the trip I noticed it was still shaking and it got very noticeable above 80-90 mph. Before today, I'd been over 130 occasionally, touched 140 a couple times and this never happened previously. Car is a 2014 Track Pack, mods are 2.9 Whipple and Kooks long tubes. Stock suspension, stock everything else. Has anyone else experienced such a thing? If so, how did you resolve it?