Dr.Ill, try...
www.p38assn.org/index; they used to have a `conversation pit` for those questions;I did ask once,but it was the usual `we won, so there was no need`. Even the Lightning II never went into RAF service either.The prototype P-38 had `handed` props ,a la Hornet, but that was changed on development a/c to `outwards rotation` due to aerodynamic interference of prop-wash on the tail.The RAF Lightning1 didn`t have turbo-chargers, and the props rotated `right( from the cockpit), so they were the worst of two bad jobs!!