Jacques,
What timeframe are you needing for the sourcing of battery box bolts?
I know a fellow who may be able to provide a pair, but I need to go & look for them. I wouldn't be able to go there for another 2 weeks. The above photo shows my step assembly & battery tray, which came from the same place. I had literally tripped over it while searching for another part. It cost me $10 from memory. I'm happy to go see this fellow and look for you. It's been a while since I last saw him, so it's an averdue visit anyway
Not sure if I had posted this photo. Just in case.