My build has a floor mounted pedal box, and this means there are bolts through the floor and show on the underside of the car.

Will these need covers/anything else, or does it fall within the exempt area and doesn't matter?

Thanks

The underside is exempt from the edge radius rules.

I put nut caps over all exposed nuts and bolt heads externally visible on the car, not needed but it pleased the IVA man as it looked like I had put some thought into it!

If you're likely to injure someone with the radius on the nuts/bolts, then those nuts/bolts are probably the least of their worries.