What year Dakota manifolds to use?

I'm using mid 80's smogger manifolds ( came from a v8 diplomat ) for mine until I get some cash saved up for the 340 manifolds. I did have to plug the o2 sensor hole and the egr pipe holes, but for $30 at the local yard...couldn't pass it up. The horsepower lost is a moot point as it will still melt both of the 245's to the ground if I want to.