Particular situation on a new rebuilt block need help!

Ok so i purchased a fully rebuilt 1973 340 that has 1969 internals specifically speaking 1969 crank. Now lets take a pause. I have a 1971 Dodge Demon which has radiator outlet to water pump on passenger side. The water pump same. Now going back to the crank. The crank pulley’s i know are different in depth 1969 and older are shorter in depth to match its water pump, and the 1970 and newer are longer. Same for the water pumps they are thinner and iron in 1969 and older and the 1970 and newer aluminum are thicker. Now with all that being said. This crank is really ******* up my world. Converting to the aluminum water pump has me losing the timing marks so i got a timing tape and some fluorescent paint to flip marks to other-side of damper. My question is will the 1970 and newer pulley work on my 1969 damper? I have heard the pulley bolt holes dont all align as one is offset is this true? If thats the case in order to keep everything 70’s up can i change damper to a 70’s and up external damper. Will the damper work with 69 crank?