Ply roof length to cover bulkhead gap

[Fintank]

Morning all, does anyone off the top of their head know how much longer the front piece of ply for the roof needs to be to make up the gap left by the bulkhead? Cheers

 

[N G Neer]

I managed to get an original roof panel that came out of a Kombi (no front bulkhead) and it's 20mm longer than the one I took out.

 

[Fintank]

Cheers mate! Much appreciated