Seeking To Replace 32 3 DR Caldwell Channel Balances

Thanks for the kind words! Glad I'm of assistance. This looks like an S385-33 or maybe an S380-33 to me. The difference lies in the bottom nylon shoe depth, or 'heel-to-toe' measurement. The Series 385 uses a shoe that is 1-3/32" deep, while the Series 380 shoe is just 1" deep. Based on your photos I'm leaning towards the Series 385, but it's best to confirm the measurement to be certain. In either event, you'll need a stamp option of 3230. 

Comparison of the S378, S380 and S385 balance shoes.