I have an 85 stock K5 with a 305. Have acquired a 1989 TBI engine from a chevy caprice. I have the complete wiring harness,from the ECM to the engine sensors etc. Has any one put a similar setup in an 85? What would be involved in adding this setup to the existing wiring harness? Would there be many mods to the wiring required under the dash? Are there parts of the electronic controlled distributor harness in the 85 that could be used (speed control, code light)? Any help or comments would be appreciated. Thanks.