Micky, the way they tell it the OPD parts alone cost $25-$45, depending on who's telling it. The cost of just re-cert is (should be) that much less ... $15 in our area. A new one, which robs your Perf from being as-built (if that even matters to you) is $50.00 at True Value Hardware (in stock). I think that's where I'm headed when I start to "Restore" my '92 Grey. Good Luck and forge ahead.