Spitfire PRU

I want to build a Spitfire PRU in pink, What Marks were used? What squadron markings would they have had? Would the guns have been removed to lighten the plane for higher speeds?

Is there a source to see the external differences in the Marks?

I watch Will Pattison’s Youtube channel and he has a helpful video where he talks about the Marks used and weapons and everything else about a PRU Spit. Hope this helps!