Pinion Angle

Well I had a couple of mopar drivelines but I assumed they woudn't fit because they were from other cars. My mistake!!

So I found a driveline that fits great "Yeah" and its -4 or 4 degrees down towards the pinion.

From what i have been reading: for a street cruiser/low horsepower/leaf spring/ rubber bushings they want -2 to -2 1/2 of pinion angle.

Since my driveline is -4 would I need to put my pinion angle at +2 degrees for a total of -2???