[WSSix]

I don't think you'll be able to use half height subframe bushings with that tunnel piece. I tried using it on my car which has half height subframe bushings. It wouldn't fit my already modified tunnel which I kind of expected. However, I ended up cutting way further forward towards the firewall to get the floor to clear the transmission in the end. Had Holley's piece fit my floor, I would have had to modify it further. It's a good looking piece for sure.