Struggles after 4900 rpm

You really should learn some diagnostics. You might fix it throwin parts at it, but you won't learn anything.

A valid point. That is why I asked here first. The plug wires I've been meaning to swap for some time though.

I learn a lot all the time through this great place, books, friends and by doing. When I got this Duster I had never before done any work to any car actually. Now I have on my own swapped out the entire drive train and all that task includes :)

The rain is coming down hard, so I cant go for a test today. I will end up in the ditch If I try to floor it.