Guys:

I'm building a Sig Astro Hog Bipe. I will power it with a Saito. My question is should I power it with a FA-82 or FA-91? The 82 is about 4 ounces lighter than 91. What other considerations do you see between the engines that I should consider. I presently have a.91 on a Sig Four Star and the plane performs well. Any advice is greatly appreciated.