You are going to have to look at 3 different 19 turn motors. We all know about the Chameleon 2 motor. Most of the oval guys I talk to say the quality control of these motors needs help. Take it for what it is worth as they were running the 1st edition of this motor and with those you could crank the arm.
Rumor has it there will be a new Reedy 19 turn out but when I don't exactly know. The nice thing about the Reedy motor is that you can buy them with bushings or with bearings. I am not sure if the new one will be available that way.
ARCOR, is a group of people who decided to come up with a 19 turn motor rule and run them in 4 cell oval. That motor is completely different than the ones listed above. It is, I am led to believe, hand wound in a modified can. So you get adjustable timing and a quality hand wound arm that is also tagged. This motor is only available from Fantom right now but I expect other motors companies to jump in the fire but not sure if Reedy or Trinity will. This motor might be a little too advanced for some people new to the hobby but you know you are getting a good motor to start with unlike with the others.
Ok, now I have said too much.