vacuum hose question
So on my son's 91 Mustang (5.0L/LX), the vacuum port on the front of the intake, the one pointing directly at the distributor cap, disintegrated. What i observed was that that the barbed steel pipe on the intake is a lot larger diameter than the plastic connector barb sitting at the base of the distributor. The vacuum line is part of the EVAP system. Is there a special Ford hose part part number? I bought a foot of Gates part 27044 (1/4" ID vacuum hose), and though it fit fine around the plastic connector barb, it was a supreme struggle to get onto the metal barb at the intake (tucked down in the damn tunnel). Please let me know what folks do for this line - I know an easy fix would be to buy 5/16" ID line and then buy a step down plastic barb, but I don't think that's what Ford had in mind.
Thanks in advance for the help.
1995 Impala SS. 396 LT4 intake and heads, with GM/Crane 847 Cam. Tri-Y headers. T56 6 speed conversion. 4.56 gears. 58mm TB (Holley) with RAISS intake. Cat delete. OBD2 PCM. Bryan Herter Programming (custom).
1990 Mercury Grand Marquis. Cold air intake. 3G alternator upgrade. Bone stock otherwise...
1974 F-100 with 390 HP (from 66 Fairlane GT).
1991 Ford Mustang LX, 5.0L, Bone Stock
1996 Buick Roadmaster. LT1. Bone Stock