Have to agree, foam looks in remarkably good condition, shame to take it off. Obviously, to powder coat the base , it would have to come off.
The rear mounting lugs below seat don't look right. Have they been repaired or replaced at some time ? Also, check for cracks in base on the sides about halfway along. A known weak point, the pan can break it's back at this point. Rear of seat should sit approx 40mm above the rear light, as the header photo on this page. I've welded a 20mm wide strip along both pan sides to beef it up.
