I dont know anything about the Stealth heads.. I have
looked at Mopar heads from MP.. the valve job was JUNK..
the springs were so far off that you shouldnt run
them on anything but a hyd cam... so based on this
I would either take them apart and check them myself
OR have a shop check them out... why listen to anyone
or an website... so it cost a few bucks.. it might
save your engine... one valve guide to tight and you
eat a engine...... but this is JMO