B1 head ports taller or shorter? Pro-parts hit my 400/451 with stock heads right at the pan rail. 440 would fit better. No problem with stock steering and brakes.
mine did with a little work on 1 tube ( hit the steering ) with Indy heads.
and with the way the tube was on mine it would have hit either way. i think someone was having a bad day when they made that tube....