Cub Crafters of Washington and by American Legend Aircraft in Texas, as the Cub continues to be sought after by bush pilots for its short takeoff and landing (STOL) capabilities, as well as by recreational pilots for its nostalgia appeal. The new aircraft are actually modeled on the PA-11, though the Legend company does sell an open-cowl version with the cylinder heads exposed, like the J-3 Cub. An electrical system is standard from both manufacturers. The J-3 is distinguished from its successors by having a cowl that exposes its engine's cylinder heads — the exposed cylinders of any J-3's engine were usually fitted with sheet metal "eyebrow" air scoops to direct air over the cylinder's fins for more effective engine cooling in flight. Very few other examples exist of "flat" aircraft engine installations (as opposed to radial engines) in which the cylinder heads are exposed. From the PA-11 on through the present Super Cub models, the cowling surrounds the cylinder heads. A curiosity of the J-3 is that when it is flown solo, the lone pilot normally occupies the rear seat for proper balance, to balance the fuel tank located at the firewall. Starting with the PA-11, as well as some L-4s, fuel was carried in wing tanks, allowing the pilot to fly solo from the front seat. Variants Civil J-3 Equipped with a Continental A-40, A-40-2, or A-40-3 engine of , or A-40-4 engine of J3C-40 Certified 14 July 1938 and equipped with a Continental A-40-4 or A-40-5 of J3C-50 Certified 14 July 1938 and equipped with a Continental A-50-1 or A-50-2 to -9 (inclusive) of J3C-50S Certified 14 July 1938 and equipped with a Continental A-50-1 or A-50-2 to -9 (inclusive) of , equipped with optional float kit J3C-65 Certified 6 July 1939 and equipped with a Continental A-65-1 or A-65-3, 6, 7, 8, 8F, 9 or 14 of or an A-65-14, Continental A-75-8, A-75-8-9 or A-75-12 of or Continental C-85-8 or C-85-12 of or Continental C-90-8F of J3C-65S Certified 27 May 1940 and equipped with a Continental A-65-1 or A-65-3, 6, 7, 8, 8F, 9 or 14 of or an A-65-14, Continental A-75-8, A-75-8-9 or A-75-12 of or Continental C-85-8 or C-85-12 of or Continental C-90-8F of , equipped with optional float kit J3F-50 Certified 14 July 1938 and equipped with a Franklin 4AC-150 Series 50 of J3F-50S Certified 14 July 1938 and equipped with a Franklin