#Moar Horsepower?

The 1979 Mazda RX7 - Desireable Track Car

It seems this platform is very popular in club racing today. You see them as prized possessions at SCCA gatherings to simple track days. The wankel engine can be punished time and time again and doesn't suffer from the same weaknesses as the standard reciprocating internal combustion engine.

As well, this car is light compared to it's brethren and when given upgrades it's power to weight ratio is hard to beat.

My Questions:

How can I make the internal combustion engine better?

*What are some of the performance upgrades that really bring everything together?

OR, simply put

How do I get more overall horsepower out of the fantastic platform?