Before I purchased a new one online I thought I would check to see if someone had a long hawken sight with 3/8 dovetail setting around the old bench or tool box. Story below if interested.
I found the ever elusive 58 cal T/C drop in barrel, new at Dixie Gun Works in the scratch and dent aisle. While it is new, it is missing the sights and nipple. This particular barrel, unlike original T/C barrels has dovetails in the front and rear position. I believe with some minor fitting a T/C sight will fit the front dovetail. The rear dovetail cut measures .282 at the top .325 at the bottom and is .070 deep.