Cut away all the old bulkhead just leaving the top panel and the fixing holes for the windscreen motor. Also put a semi-circular cut the top of the panel for the air filter this let me move the bulkhead forwards by 20mm.
Trial fit of the roof. Always intended changing the intake and twin carbs setup for a lower intake and a single carb. But with roof on the position of the bulkhead is to far back in relation to the door openings and were the door seal edges need to be extended from the chassis onto the Jag frame/roof. So I need to change the distributor and make a new bulkhead so the bulkhead can be moved forward and sit over the distributor and up against the single carb.