400 into 65 valiant

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It won’t fit with as produced parts from anybody. To put the RB in mine I’m having to:
Notch the K frame.
Fab mounts for the engine and transmission.
Modify the trans cross member.
Modify the trans tunnel on the floor.
Modify the left side inner fender steel to allow more room for headers.
Fabricate headers.

other than that it’s bolt in... lol
you are using automatic ? I was hoping the stock trans mount/ location would at least work. Things lined up fairly easy in my 67 dart. The k frame looks tiny in these things

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