1986 sound correct on the GB. I bound mine while building me first plane. The Eaglet w a K&B sportster 20. So I saved and put a Sportster 40 on the cub. It was a natural 2nd plane.
On the GB Cub. I learned the e-flight gear fits perfectly and is functional. For under $20.00. Wheels work too. I don't know about the super cub cowl yet.
http://www.horizonhobby.com/products...L4625#t4-PARTS
The struts look nice too.
Still haven't decided on finish to military or super cub yet. Leaning to super and adding flaps. May mod wing to a 2 piece. Looking at it as if so will add 3" to overall wingspan.