I have a Diablotin Super FG coming and am planning on hanging a .91 MVVS on the front of it. My question is, what muffler would you recommend for this engine in this 3D application? I plan on mounting the engine inverted. I need to strike a good balance between blistering 3D performance using a large diameter (15" or 16" ) low pitch prop, without too much noise or added weight. Any suggestions? Thanks for your input.