Hi all I have a 1982 GL500 silverwing when it came it had 2into1 exhausts on it which i did not like it was very rusty so i bought a set of twin pipes with everything to go with it compleat, I now have to fit the pipe into the heads but the fittings are different the new set have large fittings in place of the small push in ends the old pipe had how do i get round this problem, HELP. Micky Price.