I tip in regards to the port match to get your heads set up to your RA4 Intake is this.
The roof of the heads need to level and match the Intake Manifold height for 1/8" passed the end of the push rod bulge .
From there on back into the Intake runner the roof needs to taper back down at the same rate that the floor rises pretty much.
You should use inside snap gauges for this or make a still cardboard template once you do one so that all the others are the same.
While you have the grinder in hand you should cut back the push rod bulge so the width top to bottom is .960".
PS.
A buddy of mine had to ditch those PRW rockers also.
He was lucky that they started to make noise while loading the car in the race trailer and on the first time shot at the track!
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I do stuff for reasons.
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