From reading the recollections of pilots like Robert Johnson and Art Fiedler, it seems that the practice of P-47Ds being modified in-field to pull ~72" MP on WEP was a ubiquitous practice. I think this would make an interesting and desirable perk option to add a little something to your common Jug, and would require no new skins or models, only adding some thrust and making the MP needle go up higher on WEP.