Loose the Ribbed pipe, it's not a true tuned pipe. Check out the Hotbodies pipes and THS pipes for the Savage. Dynamite makes a few pipes for the LST that will work for the Savage but you still need a one piece header to fit it properly. The 086 would be the best but it is not a bolt on pipe, it's a left hand exhaust for truggies and buggies.It all depends on how much effort you want to put in to making it work. I recommned the Dynamite Platinum 086, it's the most durable lightest version of the pipe. A nice hard anno. finish too.
That ribbed pipe is not a upper RPM pipe, it makes a butload of torque from bottom to mid, then it falls flat on it's face. No upper rpm power.