[D13]

Why not j-yard a complete GM TBI system, 87-91 ish? Unless you have low-cost access of all these mixed make parts, and knowledge of each's range of capability, it would seem a lot easier to buy a beater TBI truck or jyard all the GM sensors and the harness off one, then you would just have to adapt the MS system. If you bought a clapped out 305 truck you would have the 7 pin distributor too, and all you would need is the adapters you have fabbed.

I'm assuming you went MS for the additional tuning capability, since your combo looks to be a little beyond the capability the stock TBI ECM. I think the MS is a big step up over carb, and I know it is much more tune-able than GM stock (particularly with stock PROM).

Not challenging, just curious.