Sorry for the limited photo, but can anyone verify that these are the stock header pipes for the '87 VFR 700? There is currently a 4 into 2 into 1 Yoshimura exhaust on it. I'm setting up a trade for an original exhaust and just want to verify that this Yoshi system will fit his bike and and that his stock exhaust will fit mine. '87 VFR700f2 - VFRworld Photo Gallery Thanks.