273 -318 swap information needed

welcome! If your 273 is original, the water pump will be cast and exit on the opposite side as a '70 and up 318. Also, the timing marks will be on the opposite side. A few ways around it, one being a different radiator. I swapped out a '65 273 with a '85 318. I used the 273 torque converter behind the 318 and it worked great.