Speaking of Chevys, many years Dodge trucks used Saginaw (GM) power steering pumps, the same units used by Chevy/GMC trucks of the same years.

Chevy/GMC 4x4s have used New Process/New Venture Gear transfer cases (Chrysler) for many years. In the '70s, all the Big 3 (including Ford) used the NP203 full time t-case in the same years (75-79)
Although, the same basic internals but not the exact same unit, as they are married to the transmission and specific each to Dodge, GM and Ford. Ford used an opposite side case, too, with the front driveshaft on the driver's side, whereas Dodge and GM used cases with the front shaft on the passenger side. Front driveshafts interchange between Chevy and Dodge in those years. Front axles interchange, but are not the same, as they use different brakes, hubs and bearings.

JS

I've read that the C body big block oil pans with the notch to clear the tie rods work well in A bodys, and also to convert F/M/J body to big block.

72-93 trucks use the same hood hinges as 66-70 B bodys.

I also used a 68-69 b body turn signal switch in my 1971 D100.

Aren't early Viper six lug hubs the same as the Dakota in those years?

JS

60s and 70s Ford P/Us have same drums and wheel bearings and wheel as early Imperials.

Aussie 2bbl slant sixes used max wedge air cleaner lids of course...

'70 Charger R/T grille "R/T" emblem is same size as '71 Charger R/T fender and trunk emblem. Just have to remove the posts to use on the '71. Still hard to find.

'66-67 b-body sedan and wagon gas tank fits '68-69 b-body wagons. Not sure about '70 due to emissions.

See this thread. https://board.moparts.org/ubbthreads/show...&PHPSESSID=

I'm not sure if this is obvious or not. 1971-73 Coronet parking lamp lenses are the same as a 1970 Coronet.

I'm running an 80's Caravan 2 speed wiper motor in my 1972 Coronet. It works perfect and even parks the hideaway wipers.

Many year wiper motors are the same, especially 72-93 trucks, and early model Dakotas, all those years interchange well.

JS

67-68 Dart 2dr. sedans shared the same doors with th 67-69 valiant 2 drs.

1980s Dodge trucks with tilt steering columns used GM columns for many years, including GM style keys and lock cylinders.

JS

only skimmed through the thread but did anyone mention that the '68 - '70 B-body Dodge and Plymouth doors (Sat, Belv, RR, GTX, Cor, R/T, Sup Bee,....) are the same except for the lock button position on the '68's.........and I think if it wasn't for the "scallops" on the Charger doors the same would apply there too....

'69 A12 high idle solenoid is a Delco-Remy part used on a Pontiac too

7 1/4" rear axle fill plugs on the back cover are the same as max wedge intake plugs.

awesome topic
truck stepside fenders are the same from 1953 to either 83 or 84 , long or short bed , i got 2 off a 53 fargo 1 ton long box for my red express ,they ere alot thicker too

Here are a few oldies.

1966-72 c-body, 1966-72-b-body, 1970-72 e-body 383/440 engine mounting brackets are all the same.

1973 C-body disc brakes will fit 1966-1972 c-bodies.

1966-69 b-body k-members can be replaced with 1970-74 e/1970-2 b-body k-members for cheaper suspension upgrades and better handeling. 1973-74 e-body brakes use the cheaper rotors too.

8 1/4 and 9 1/4 will fit earlier 8 3/4 rears, bolt right on.

a-body 8.75 rears and early b-body rear will fit nearly perfect in 1930's street rods (unsure what models fit with what though).

1974-80 ramcharger/traildusters came with 15x8 rims and will fit nicely on rear of mopars with 4.5 bolt pattern.

there is probably another 60 items I can post, but don't want to let the thread die off yet.

THERE IS A BOOK FOR SALE ON AMAZON.COM CALLED "CHRYSLER MUSCLE CAR PARTS INTERCHANGEABILITY 1968-74" BOOK IS BY PAUL A. HERD (MOTOR BOOKS WORKSHOP)