Thanks for the replies. I just ordered a Hanger 9 mount from Don's Hobby shop and will decide which to use later. I also will cut away the firewall and brace it to clear the Pitts muffler. I believe this is the way to go. Keep it simple as possible. I have built and flown all the Midwest 80" kits but had powered them with Moki 2.1 engines. They are brutes but I was getting tired of all that glo fuel they burn. I also like the fact that Gassers aren't particular about tank placement. Thanks again, Skip