RE: GP Waco?
leedees,
Go over to the WACO YMF thread in Vintage. On page one scroll down to entries 17 and 18 and check the photos. Since both the Pica and GP Waco are 1/5th Scale, the fit should be similar. The index will also take you to instalations of the G-26, Saito 120 and 170 Radial.