I had a 22R.. I put an Offenhauser dual plane intake manifold on it, weber 32/36, 5:29s. Im not trying to be negative here. I wouldnt spend the money on aftermarket parts unless you really "build"/ p&p the head. Getting these motors to boogie isnt very cost effective. IMHOP. That being said... the biggest difference i noticed was the intake manifold. It gave the motor usable power closer to 6,000 rpm. It did pull longer but not necessarily harder....better throttle response. Also. I have a 22R layin around. $100 takes it. It runs. Pulled it for a 3RZ swap. Good luck!!
