Read this before you swap...

Always the intakes seats. There's a message here. Intake seats need more press fit than exhaust. Why ? Intake seat is weaker, runs much cooler than exhaust seat and therefore won't grow as much when aluminum head does. Best fix is aftermarket seats, that are stronger/higher alloy, with a greater thermal growth, to keep the press fit, when up to operating temp. Local shop gets $8 each for labor to R & R., $'s well spent. This makes a good time to upgrade your 5.7 intakes to 6.1's. Much better/lighter,(hollow) valve and better flow. New ebay take-outs are dirt cheap. Good Luck, ateam.