I can provide that for you. I don't mind giving the throttle body a porting up to 70.25mm for a small fee. I also do Port matching to a PRB head & to the IMG, porting and shaping runners is a thing I do for people for a fee. I can PM you pics of my work.
$375 labor for runner shaping, runners port matched to your gasket, and TB tapering & will bore to 70.25mm and re-welded plenium. I do very good and accurate work.
I ensure proper wall thickness throughout by caliper, use a variety of manual calipers, and electric calipers.
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