If its an aftermarket block is it a Ritter block? I would consider a R3 block factory same with any of the W series heads as they were produced by or for Mopar. Indy heads ? perhaps Brodix B1BA ? Edelbrock?

68 Dart 410 / 904
92 D150 original owner
21 Ram 1500 Quad Cab, Big Horn , Hemi ,4x4
23 Audi Q5
16 Honda HRV