ORIGINAL: YellowAircraft
Justin,
You should take a hard look at Jet Tech pipes. Gary Mueller makes excellent pipes to whatever specs you need. He also makes the 'augmentor' pipes for smaller engines. The nice thing about his pipes is that if you want, he will include a SS mounting ring that screws or bolts to the aft-most former. It's a lot easier than wood standoffs. The pipes also include cool aluminum mounting straps that bolt to the tabs welded to the pipe, then to whatever structure you have up front. They run $170 for straight pipes. For straight pipes, it's all I use/sell anymore. Good luck!
+1 the mueller pipes i had in my YA F-18 twin were fantastic..