the 22R Hybrid Motor...
Many people who have a 20R search for more performance, and the 22R Hybrid Motor is one way to get cubes and horsepower. Starting with an early 22R, the 20R head will increase compression and add power.  There are lots of performance parts for this motor, and 300+ horsepower has been attained with turbocharging.

DISCLAIMER: use of this information is at your own risk.  Mascot Graphics takes no responsibility for interpretation of this information, and it is to be used as a guide, not an instruction manual.  All modifications were done knowing the risk.