265 hemi straight six
There's an individual in Seattle named Michael who posts under that name at slantsix.org and who, last I checked not too long ago, had two or three Hemi-6s in his garage. Don't recall whether they're 245s, 265s, or a mix.
Whoever vows to blah blah blah go to his grave believing
the Hemi-6 is a blahbittyblah must be rebadged blah blah GM motor blah blah blah is vowing to remain misinformed and to deny reality for the rest of his lifeākind of nutty, IMO. The origin and provenance of the D-engine (Hemi-6) is well known and documented, and has utterly nothing to do with GM. R&D got started by Chrysler in the US in 1966, then the D-engine development work was transferred down under, and it was released there (and only there) for the 1970 models. Might be a good idea to read what
the actual engineers who were
actually involved say on the subject before blathering about how it must be a GM motor because, um, um, um, because LOOK, IT JUST IS, OKAY?!!