69 Mustang Rust Problems

G'day all, My names Josh O'Brien and I live in Australia. Me and my Dad recently purchased a 69 Coupe with a rust problem in the floor and I was wondering if you guys could help out. Our theory on it was that leaves had gone in the vent in front of the windscreen and blocked the drain plug for the water and therefore the water has had nowhere to go but in the vent next to the Foot/Handbrake vent. I'm just wondering is this a common problem or is this just bad luck also if any other problems are known of in the 69s. Many Thanks any help is MUCH appreciated.

Josh

OI OI OI

Thanks for that much appreciated, in a way good and bad news the good news is that down under one of our other Fords (XY Falcon I think it was.) uses the same floor pan and firewall (Easy for Conversions) so finding the replacement should be easy. The bad news is that it'll be tough. Thanks for the info on inhibitors and stuff too. I will now be participating in this board lots as it has restored my trust in humans. Haha anyway thanks again.