Yup - the Sprite lasted until 1973 - and that catalog lists it has flying with 1/4A3-2T through A3-4T. It is listed that way in the 1972 catalog as well - but listed with the short engines in 1971 and earlier. A well... not like I have the BT and nose cone any way. I think I may do a BT-5 downscale using MicroMaxx engines, tho

Greg