Boot floor/Scuttle (drain channel) personally I would take the top off and repair the channel with fibreglass Resin,mat and flow coat cuz it needs to be waterproof and fibreglass isn't, unless it's sealed, The top face can be done in metal and bonded on. That way it won't rot out again. Then it's A posts, front floor triangles, front edge of inner wings under the wing (mud trap) possibly chassis/ sills and the outer ends of the B and C crossmembers at the join of the chassis, check the tunnel for a crack from the clutch cable support bracket, just behind the drivers seat belt buckle mount, then it's C posts and top of rear wing from one end to another, plus the extreme rear edge of the back wings, another mud trap other than that it will be dandy.....