Good project. I think I'd be beating the bushes trying find tudor doors. Making 5w doors into 3w doors sounds like way too much work.
Looking forward to watching this one go together. Please take/post a lot of pictures of the how you do the doors.
on the car in my avatar the passenger door is a tudor sedan door with a 3 window door top welded to it
Great work.... but now that I see the side profile, something about it looses the great lines of the 3 window... Did you start with a 3 window or 5 window roof ? The upper doors and the rear roof loose the curves the 3 window is known for....It depends on what 'look' you are going for.... Not sure if you had a pattern or just making what you have work together.... Not a criticism... just an observation ... As far a modifying the firewall, its a tight fit. I have seen it done with no cutting. I cut mine 4 inches to make it 'easy'.
It looks like you cut the back of the roof at 10 or 11 o'clock, when it should have been cut at 9. I'd look for some chunks of another roof to see if you can get the "flow" back. I've never heard of somebody chopping the doors first, and then bringing the roof down to match. That may have been where the "uniqueness" of your chop came in.
I also put together bodies from scraps, so I'm not critisizing. I'm just pointing out what I personally saw as a flaw that would be easier to fix now than later. If you like it how it is, then all the better for you. I'm just used to the classic way that 36 3-windows get chopped.
Have been busy stripping and pounding out dents, re-doing/finishing some welds from the cars former life.
You can put a small block in without modifying the firewall. It's TIGHT, but it works. Mine has been in for fifteen years.