Does anyone have a Graydon Pro-line Pipe and Silencer. My FMF fatty and DG type II silencer are in need of replacing. I've heard through Trenga that the FMF fatty was originally their design. Can I except the same performance. I am asking consumers because the guys at Trenga are gonna' say it will out perform the fatty because they are tying to sell it to me, but I want to here from you guys out there who have tried them. Thanks for your help!