I'm not sure if you can, but it may be worth a try. You're assuming they are stock 1990 Merc's?
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I'm not sure if you can, but it may be worth a try. You're assuming they are stock 1990 Merc's?
Assuming yeah I know, pulling and pulling apart is the only, "real" way
Get the serial numbers and we can see if we can figure it out. They made the 5.0, the 5.7, and the 350 mag that year I believe from what I've looked up. Plus the 320 EFI one year earlier.....