I have an EV13 in my 97 EG. Have gotten to ride friends or test rode some with EV27 or similar.
I just like the lowend grunt mine has and the top end is as fast as I want to ride. Still can pass on a 2 lane from 70 mph plenty good.

WP

 

Amen on the EV13.

Adding dynatek ignition will also help some.

I had .025 taken off my heads and volumes made equal at the same time. It runs very smooth now and has enough torque to carry my 250 pounds quickly.