I don't know about this one..But I have seen 5.0 Ford mustang motors swapped into a Miata before..Called a monster Miata..Also you might could squeeze a small block chevy in one..I mean you can put one in an rx7 so why not a miata..
Unbelievably, an EFI 302 weighs only 20kg more than the Mazda anchor that normally redides up front. The Monster Miatas typically doesnt weigh much more than stock. Unbelievable, Mazda must be using the most primitiveof iron 4-bangers.