Quote: I wouldn't throw money at this till you figure out what's wrong currently. You should have more punch than implied. Low vacuum at idle concerns me. I would expect at least 16". No power at 5000 is also troubling. If this was a ulti keyway timing set you may be way over advanced btdt and have the broken rockers to prove it.
I have 20-22" vacuum at idle. Rockers are all good. Just replaced all wires, plugs, cap rotor, and see no visible issues with rockers and springs. When I pulled old plugs with only 1000 miles on them (about 5 years old) the threads were coated with oil, but the tips all looked the right color. Slightly brownish and relatively clean. Since it was such a PITA, I replaced them anyway.
