Not sure who is still selling the 049 but I found a pretty good deal for the .061.

http://www.shopatron.com/product/pro....0.265.0.0.0.0

As for the AME, Big Mig Start up, and the Big Mig CLX. From what I understand the AME is more of a Combat engine needing a tank with pressure feed. The Startup engine is supposed to be OK as a Sport flier and the CLX is more of a stunt engine. All 3 can be beam mounted without the tank.

Jay