This detail set from Neomega features a complete resin cockpit, gearbay and wheels for the P-39 from Heller.  

This detail set includes seat, instrument panel, cock tub, 3 wheels, side panels, rudder pedals, control stick, 3 wheel wells.

You can purchase this and other fine resin detail items directly from Neomega or from the many retailers that carry their products. 

Steve Bamford