Magoo, Maybe your end caps are drilled differently than mine, but the left and right end caps are identical. Switching left and right doesn't gain anything. Both have three holes drilled. In turning the caps around, you have to drill on the lone side not already drilled. Not a big deal. Aluminum. 13/64 drill and a 1/4 - 20 tap. Took about 30 minutes to do both sides. Be careful, straight, and use cutting oil, backing out and cleaning the tap frequently. Looks real nice. I"m very hapy with the clean look.
I compared the end cap on the stock seeg pipes and quickly abandoned any idea of adapting it to the freedom rineharts. Just looking at the construction compared to the billet aluminum freedom caps cinched it for me. No comparison in quality. Much prefer the billet end caps, albeit turned over to conceal the logo.