Help with Rallye harness replacing standard harness 70 dart

I'm replacing standard dash with rallye dash/frame and cluster/rallye harness. I'm noticing that wire colors and positions in the bulk head disconnect are not matching the standard wire harness. I thought I could just replace the old harness with rallye harness - plug and play? Also the two 10 pin steering cloumn white plugs on the rallye harness don't match the standard plug wire colors.. Would appreciate any thoughts on this.
Somebody did a write up a while back on this. I took a screenshot of this. I don't know who did the write up. Maybe this will help.

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