89 360

The 308s are reportably the best swirl port LA head mopar made before changing to the magnum heads. in 91-92. I'm using them on a 360 stroker for more race than street so went with the 202 intake valves. As BJR has said, stay with the stock size valve - or if they need replacing due to the number of previous valve grinds - go to 1.94 dia. to bring the valve back up to virgin height in the combustion chamber. Get a good 3-4 angle valve job and a bowl hog, a little blending and your good to go.
If you want to send me an email direct I will share some other thoughts/recommendations for you to consider. [email protected]