64 valiant motor swap?

Find a "392" 360 pan & the specific pickup that goes with it. Hold the 273 mtr mts up to the 360 block ears & you'll see where to weld an ear & drill a hole in it (much easier than it sounds) on the one side of the eng (dr side iirc). get a 10239 B&M flex plate (if running a 904) to take care of the balance issue (keep the 360 offsett front harmonic dampener). May need to plug the AIR injection holes in the heads under the ex manifold flanges (visual on your 360 heads to see if they have em & plug em if they are there). use the water pump to match your rad nipple & remark the dampener for TDC & add a pointer & I've used an early iron pump with the nipple both on the dr side & you can see the marks if you aim the light just right. If needed the alum pump is taller so a pulley depth adjustment will be in order. Your all set!