Hi Jim, Manning is one of the best, so you are on the right track. If I might add, when mounting the support for the pipe , you can use vibation isolaters, rubber,fiber,or poly bushings. One more thing, don't forget to allow room for the stinger on the pipe, and possible modifications to the exhaust pipes in the future,on the vehicle. The pipe is one of the most important methods for making horsepower in a 2 stroke, plus a great tuning aid. Swedetech in Elk Grove, Ca. has done alot of work on the dyno with "pipe" design and tuning and have a very good reputation. Jack Costella started using thier engines in the 5050 liner but the liner is so confined in the engine bay he can't do pipe tuning or pipe changes with out a major revamp of the engine bay. A lot of racers just slap on a "header " because they are thinking with a 4cycle mentality where they "just work" and is the last thing that is changed, but in the 2stroke engine the exhaust is the key. If I may one more thing, when starting the engines, after you have choked the engines, on self start or push, DON"T FORGET to open the throttle to allow fuel to be drawn in to cylinder as it is also the way the engine gets its lubercation. Please excuse this long winded text, I am probabley close to being the 1st person on the site to be banned because of boredom. Yikes, Mike R.