Thoughts on swapping a slant 6 with a 383

I took a 6 out of my 69 dart and put in a 400 which is a b block like the 383. Kept the power steering (very tight) and power brakes (also very tight). Mine had a console shift and I found some original manifolds. No problem with valve covers, used mopar performance cast aluminum, and no problem with original heater motor. Ended up fabricating solid motor mounts and moving the engine toward the pass side .75".
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