I have a genuine front arch/dog leg,('68 onwards) it is cut from dry USA bus, it has plenty of extra steel around the panel, goes a couple of inches into the long panel, and inside has the same amount all around,including the area where you pump the wax in on the inner arch, where they are always a bit grotty,also has the metal trim where the seatstand mat fits into, I belive the repro panel does'nt come with this, it is miles better than repro,you know it will fit and last as long as the rest of the bus
Bought from FBI for £185, now not needed, £145.