There is an old saying: "You can't make a purse out of a Sow's Ear" BEFORE ANYONE COMES DOWN ON MY HEAD I AM NOT IN ANY WAY SAYING NOR BELIEVE THAT A MIATA IS IN ANY WAY A SOW'S EAR.
I am a long time fan of all Ferraris (even a V8 miata does not a knock off Ferrari make). It's one thing (and a good thing) to create a futuristic sports car using the chassis and running gear of a Miata.
Replicas of old sport cars and racers is well and good if the chassis and power plant match the displacement of the vintage car. That makes sense to me.