94 miata 1.3L i4 engine swap origin?

[PizzaEnjoyer685]

According to this list it’s from the Sierra RX3:

FM Engine Swaps list

Forza Motorsport Engine Swaps list Use the links to jump to the list of cars for each engine swap. HP TORQUE ENGINE NAME SOURCE MAX. HP 82 hp 103 lbft 2.0L V2 Morgan 3-Wheeler 245 194 hp 114 lbft 1.3L I4 Sierra RX3 453 212 hp 149 lbft 2.0L I4 Honda Civic Type R '04 678 232 hp 159 lbft 1.3L R2 Mazda RX-8 R3 '11 676 245 hp 163 lbft 1.8L I4 Ford Escort RS1600 F&F 608 250 hp 203 lbft 2.0L I4-T Nissan Silvia Spec-R '00 705 276 hp 289 lbft 2.6L I6-TT Nissan Skyline GT-R '02 989 3…