Mine arrives today. I'll be installing GP .10-sized mechanical retracts, like I did in the combat P-47.
This is the only thread where anyone mentions putting retracts in this plane. But there's no posts about sucess of such a venture. I had my servo mounted through the bottom of the wing in the P-47 and the belly pan covered the bottom of the servo.
Not sure how it'll work on this Spitfire. Maybe I could go with E-flite's new electric retracts.....

Hand launching just is too difficult with my 10x9 props I use on my Saito .40. And who can tolerate a warbird with fixed gear?