Ive started stripping it to get it ready for the body shop. Removed the battery and heater box to see what the bulkhead was like. Its no worse than I expected. Its had a battery tray at some point that seems to have been done badly.
Center of bulkhead isnt as bad as I thought it would be. Suppose the real problem area will be behind the brake servo though.
View from the inside with the sound proofing removed.