[al8apex]

01BPBT1


0 indicates the last digit of the model year: 1970

1 indicates the GM vehicle division: 1 = Chevrolet division. (2=Pontiac, 3=Oldsmobile, etc).

B indicates the vehicle: "B-body". (full-sized vehicle--Impala, Caprice)

PBT indicates the type of audio equipment: PB = AM pushbutton radio with 8 track tape. (FP = AM/FM pushbutton, FM = AM/FM-stereo pushbutton, MP = Multiplex adapter, etc).

1 indicates this piece of audio equipment was apart of the first design run. This really isn't that important compared to the rest of the model number. If "2" had been the last digit, it would simply indicate Delco had made a change in the production of the same radio (such as an electronic circuit board revision) and it would have been apart of the second design run.

1970 AM/8-Track 01BPBT1 Combination radio/tape player is what that model number is for

Big cars, Impala, Caprice, Bel Air & Biscayne

I would think the market would be limited as it is not for the more popular cars such as the Nova, Chevelle and Camaro ...