Th engine crossmember for the Datsun 1200 fits the 1971-1973 A12 engine. The A10 engine from the earlier Datsun 1000 will also bolt in. To fit a newer engine -- a 1974-up A12 or A13, A14 or A15, a newer crossmember may be used (or an adaptation of motor mounts may be fabricated). The newer crossmember is from the 1974-up Datsun 1200 truck. Note that B210 or other crossmembers do not fit the 1200.
For engine types other than A-series, see: Engine Swaps
Early A12 ute vs. Late A12 ute
Suitable for 1974-up A12, A13, A14 or A15