I have a 74 Plymouth Duster with a 225 slant six, I bought another one Identical to it with the same motor and everything. I tried to take the tires off my old one and put on my new one and the bolt pattern is diiferent. Any body have this problem.

It is simple really. There are two different bolt patterns for A-bodies. The early pattern is 5X4 and the later is 5X4 1/2. Your 1974 should be large bolt pattern, but there are some oddballs. I can't remember off the top of my head the year Chrysler went to the large bolt pattern. Dan probably knows.

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82 D150-225/727
02 Dakota-3.9/5 speed
87 GMC C7000-8.2 Detroit Diesel/5+2

depends on if it has disc brakes, my 75 has the sbp with 9in drums while a 74 valient that we parted out had discs with the bbp

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1975 Plymouth Duster,225/6 2bbl. and duels, 904, 7 1/4
1986 Dodge Charger Shelby, 2.2 Turbo I, A525