Working on this old 79 XL500. I got a rusty header pipe that I've stripped down and getting it ready to paint. Can anyone point me to fairly cost effective rear section? It doesn't have to be stock. I see I can pick up aftermarket spark arresters - but how do I get the mid pipe for connecting the spark arrester to the header? Would a muffler shop have 1.25" pipe on hand? Thanks for any input.