Cargo floor template/measurements

[admwllms]

I got rid of my old bus without thinking of taking a template of the plywood floor. Got plenty of ply, but would ideally like to cut it out ready before the new bus arrives, because it's going to be a mad rush to get the basics in (rock and roll bed, etc) so we have some transport.

Anyone got a template I can use or know someone who sells them? Or just the basic measurements would be a good start and I can cut to fit while installing it.

Cheers