I have a 1972 DT2M motor you can have if for nothing else some bits/parts, let me know and I'll bring it to the gap.
My first "street" legal bike I bought when I was just shy of 15. Cops had a lot of years chasing me on this (no license).
I think reed was a mid-year change in 1972. My engine below is definitely a 1972 (motor #DT1F-25983) and it's not a reed but I've seen 1972 with and without reed.
DT2 SERIES
DT2 Year: 1972 Start Engine#: DT1F-105101
DT2M Year: 1972 Start Engine#: DT1F-185101
DT250A Year: 1974 Start Engine#: 450-000101
DT250B Year: 1975 Start Engine#: 450-200101
DT250C Year: 1976 Start Engine#: 450-500101
DT250D Year: 1977 Start Engine#: 1M1-000101
DT250E Year: 1978 Start Engine#: 1M1-100101
DT250F Year: 1979 Start Engine#: 2N6-000101
Bike Year Size Description Type Code VIN
DT1B 1969 250 DT1 Dual Purpose DT1 DT1-15001
DT1C 1970 250 DT1 Dual Purpose DT1 DT1-50101
DT1C-MX 1970 250 DT1MX Dual Purpose DT1 DT1-95101
DT1E 1971 250 DT1 Dual Purpose DT1 DT1F-00101/DTF-020101
DT1MX 1971 250 DT1MX Dual Purpose DT1 DT1F-090101
DT1S 1969 250 DT1S Dual Purpose DT1 DT1-90101
DT2 1973 250 DT2 Dual Purpose DT2 DT1F-105101
DT250A 1974 250 DT250 Dual Purpose 450 450-000101
DT250B 1975 250 DT250 Dual Purpose 450 450-200101
DT250C 1976 250 DT250 Dual Purpose 450 450-500101
DT250D 1977 250 DT250 Dual Purpose 1M7 1M7-000101
DT250E 1978 250 DT250 Dual Purpose 1M1 1M1-100101
DT250F 1979 250 DT250 Dual Purpose 2N6 2N6-000101
DT2MX 1972 250 DT2MX Dual Purpose DT1 DT1F-185101
DT3 1973 250 DT3 Dual Purpose DT1 DT1F-135101
