Well I would narrow it down to a power pros, original klemm or a sprock. I dont think It is a sprock pipe. I would say it looks alot like a power pros pipe. May be original klemm as well. The power pro design was taken from the original klemm design. I compared it to the pipe on tecate project page looks close. Power Pros . The original klemm can be seen here. I believe this is the one rockhound had. http://www.kawieriders.com/forum/kawasaki-tecate/78775-what-mystery-pipe.html