"Low Band "apply question

Hello all,

New owner of a 72 340 Duster w/a Reverse Manual Valvebody 727. Plans are to make her a capable strip car, with occasional trips to local cruises/shows. I have found many references here on the forum regarding "Low Band" Apply, i.e. good/must have for safety (keeping feet intact) and to avoid grenading the tranny. Wondering if there is a way to determine if the low band is/ins't set up without pulling/opening the tranny up. There were some references to engine braking etc, but thought I'd ask the question to those of you that are "in the know".

Thanks in advance!