I received mine yesterday and got it installed in about 90 minutes thanks to your excellent write up and pictures! I think it looks great on the truck.
I occasionally have the same issue with my size 12 feet. It happens less as I have gotten used to it and place my heel a little further back. I have also thought about trimming about a half inch off the vents.
I haven't turned it up super loud but I am very impressed with how rich and full it sounds. My company truck has a base radio and there is a night and day difference between that and the B & O in the Ranger.