The dents will be on the subtle side don't fret yer britches ya big Scot! Plus there are 2 big ugly dents from PO's that are getting some filler too.
I've been thinking about the Hayashi's on the F3 too. I really love their ride on my K6 though! The Hayashi is drum braked as opposed to the hydraulic disk for the F3 so that would be a challenge. I do like the disk in the back.