The 230 "cold weather block" was cast in the last 6 months of 71 for the 72 model so if it has a 71 cast date then should be good to go. I've got up to 450.00 for a nice early block.

72 Satellite Sebring Plus 440, 72 Dart 5.9 4-spd, 68 Valiant, 73 W200, 78 D100 sb, 78 D200, 98 DAKOTA, .
Moparmarks Parts & Restorations
Desert Mopar Metal
Grand Jct. CO
970-261-7039
http://moparmark.com/
motormangj@gmail.com