360 build

well..i got a great deal on a set of j heads from J-MacsMopars. Theyll be sent to the machine shop next week to be cleaned up. Wheres the best place to buy hardened valve seats? And could i port these myself? (im 15)

If thier going on a 318 no port work is needed.The ports are more than enough stock.However the chambers are large too and the head should be cut,otherwise compression will be no better than 7.5:1-8:1 with 360 heads.What year are they? They may already have induction hardened seats.

If these are jy heads be prepared to spend some bucks freshening them up.