Full valve job, minor port and polish, chamber/bowl work, competition valve springs, intake ports are now 1 3/8". havent measured the exh ones. Camshaft is a 'CalCams 27-D', Dave Rebello tells me its the milder of the two cams they usually use(hence the still-small ports) but its pretty mean for a 2bbl setup like mine. The head is built for the small-ish (1.9L) bottom end. Too much port, and you actually LOSE power.