I've found a guy who will make us 85' & 86' owners- a hand coned, hammered pipe, even offered to design and make the rest of the exhaust for a total of around $600-$650.  That's not including chrome job.  He's in southern Cali, somebody has already offered to lend him their 250 so he could design everything for it.  I've searched for a LONG time to find someone who could/would do this.  He is the only person in America I know of!  Would you be interested in buying a pipe?