71 Duster 360 turbo build

Yes sir, Mopar Magnum HD roller lifters, I bought the last set in the US, slightly bigger shaft harder roller. Whatever preload the have with the thinner Cometic head gaskets and stock pushrods & rockers. Probably around .100". They creak when they bleed down and it takes a few minutes before they stop making noise. I would refurb a set of stock lifters (disassemble, inspect, clean, and reassemble) and use them.