First swap ever, or first documented swap? Hard to say what is what...
Why does it matter though? We've got a great "BP Swap Guide" in the N/A Engine Swap forum... So, if you're interested in doing the swap, I'd start there.
Mazda probably did the first swaps, putting bp's in other models while working on prototypes of other cars interiors suspensions etc. Then they found out the car was too fun, too much wheelspin, too many clutch replacements and had to take some steps down.
1993 GL 5 speed
It's a MazdaFordnKia thing, and you will understand!
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