I don't know the precise angle that the nose is supposed to be against the cowling but from what I can work out, the front end is pretty much the same as the XIX, everything aft of the engine was changed though for the 21/22.

Glad everyone is questioning the tail, it's been driving me mad but has been checked as best I can against several photo.

I almost wish they'd only made one prototype of the Spit and left it at that, much easier to do profiles that way, instead of the myriad of options we now have to deal with.