I just got off the phone with Brison and the man there said I could mount everything side by side as long as I had a bosh (not sure about spelling) spark plug cap with a metal lead going to the plug held on by a hose clamp. He said with the bosh I would not have to worry about RF but suggested to still go back 3 to 4 inches. My 80" Lanier Cap 232 is tail heavy and I would like to fix it without adding lead. I bought this plane used and it has the bosh. I am new to gas. Has anybody heard of this before? Thanks for the help.