For a new part designed for the new Mark it would have the new Mark number.If the part remained unchanged it would have the older part number.You need to look at the evolution table of the spitfire to see what components were used..MkI to MkII,MkII to MkV then to MkIX etc..MkIV evolved into MkVI,MkVII and MkVIII.

Would only be the updated drawings for that Mark unless an earlier drawing was found to have errors or corrected on the assembly line.

The Aussi Dr1 is run by the TAVAS collection at Caboolture.
http://www.tavas.com.au/the-aircraft.php

I doubt the turning circle would have been an issue with the Hurricane being able to out turn both machines..;)

Firewall is .125″ asbestos millboard with a layer of .025″ ish alclad each side….. I thought I saw a puddy cat…

Beautiful work as always Stuart :)If you would like can send you CAD drawings for the rear fuse frame formers that we did for ours.[ATTACH=CONFIG]232456[/ATTACH] Also have done up some Spitty bits via 3D printing for sale at my online Shapeways shop. https://www.shapeways.com/shops/spit?s=12#more-products

Woopsadaisy…..Anyone got a ladder?