ECU part numbers for 1975 L-Jet, looking for info Options

[rick_cv]

Trying to piece together an L-Jet fuel injection system with the parts I currently have. Missing the ECU and have a 6 pin AFM. Does anybody know what the correct ECU part number is for a 6 pin AFM? The early 1974 411 has part number 022906021F and the going rate is 1/3 the price of a 1975 914 unit, part number 022906021G. A 1975 bus ECU typical part number is 022906021H. These are all indicated for manual trans but not sure which AFM they work with. Thanks

[wonkipop]

Trying to piece together an L-Jet fuel injection system with the parts I currently have. Missing the ECU and have a 6 pin AFM. Does anybody know what the correct ECU part number is for a 6 pin AFM? The early 1974 411 has part number 022906021F and the going rate is 1/3 the price of a 1975 914 unit, part number 022906021G. A 1975 bus ECU typical part number is 022906021H. These are all indicated for manual trans but not sure which AFM they work with. Thanks

the F G H sequence makes sense with the phased intro of L jet.

the 412 is first. 3 months later then 914 and the bus comes 3 months after the 914.

the 412 was fully automatic gearbox only.
(manual 74 412s had 1,7 d jet engine retained and were only 49 states and only fastbacks).
914 was manual.
the bus according to the CARB doc is a manual.

so its hard to know if that is a superseding sequence or it does point to the ECUs being different in some way. tricky. but it is interesting that the CARB doc does not list those sequence of ECUs when it was issued. just lists approval for the F version on all three.

EDIT
the part # you are listing for a 75 914 ECU is the part# the 74 ECU.
the # for 75 is 473 906 021 and the 75 is the 7 pin connector from AFM to ECU.

different AFM, connector and ECU on 74 to 75.

clay perrine might have a better idea of whether you can mix and match the 914 ECUs and AFMs and how that might be done.
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it would be interesting to be able to get to the bottom of the F G H business on the 74 ECUs for l jet. pure production numbers alone would say there is 3 times as many 412 L jet ECUs lying around somewhere presuming they did not all end up rusting in junkyards.
could even be stashes of NLA 412 ECUs still around.
with spare parts getting harder to find it would be nice to know if its a viable alternative.
as you discovered its cheaper, but it might also get to the point where we are scraping the barrel for spare parts if we want to keep original L jets going.