1988 plymouth voyager running issues?

I posted earlier about an oil leak Im having with this 3.0 engine. This issue however involves how the engine is actually running. When I first started the car after the engine swap it was bucking and jumping all over the place like it wanted to jump out of the engine bay, after a few startups the idle seems to have cleared up and its running decently actually. The issue Im having now tho is when you rev the engine it shakes badly, when you put the car in gear and try to go it just sits there bucking in place like the engine is misfiring all over the place. I have checked wires with an ohm meter and they test fine, I checked plugs and while they are slightly carbon'd they arent at the level of not sparking. I am getting good spark from the wires I pulled at the Distributor. The other thing is when it was running bad at idle before, if you pulled a wire of the Dis.Cap there was no change in how the engine ran. Any ideas as to the problem? Also Cap/Rotor are good.

Thank you for any help1988 plymouth voyager running issues?
check the timing.you may have a bad dist.1988 plymouth voyager running issues?
sounds like valve issues %26amp; check bushings That's probably the last 88 Voyager on the planet !
either the timing is off , you dont have the wires in the correct order or your wires arent on tight
More than anything it sounds like a couple plug wires are reversed.I don't believe low fuel pressure would make it shake and buck.