year breaks on 225 please

yes that helps. it appears that the motor may be locked up and they got rid of the a/c by throwing the compressor, pulleys and a few brackets away. it was a p/s, a/c stick truck. the wiring is a chit show but i have an 86 v8 under hood harness that should work. it has the computer under the fender, so that will also go away if i fix it. might also add a 2bbl as this is a 1bbl eng. that is a big help. thank you, RRR.
You will likely have to lengthen the distributor and alternator parts of the harness and possibly the ac wire or wires as well as the slant 6 is a bit longer than the V8.