Be careful on this one. My uncle has a 69 Dart GT ragtop that has been in our family since 1971. Many of these cars were coded for 318s but came with 273s. I think there was even some kind of lawsuit or something back in the day. Ours has a 273 auto on the column, R4 red with black top and interior.

'70 Cuda 440/auto
'70 Duster 340/4sp project
'70 Satellite convert 318 survivor