Intro to a port job

Did the machine shop mill the heads to flatten them?
Yep, that's included in the head service. Figure out what they are after the valve job then mill to desired cc.
For others reading and learning.. your average set of 72cc 1.88 valve 360 heads ..shrink by a couple cc's-aka get smaller after the 2.02 upgrade. Take another .025 off and these would be what, 65cc, thats not much to take off, do another .015 off the intake side which is a hair less than formulated but would be enough to fit the intake.