RE: Goldberg Ultimate 10-300 ARF .60
I built the kit last year. Power is a YS120SF and the bird weighs 10 pounds. I have a Slimline smoke muffler and a 10oz tank for smoke. I use a TME smoke pump. This combo puts on a good show and has unlimited vertical on a 17x6 APC at 9100 PRM on 20/20.