Need to find 38 tooth count sprocket
I tried to search for a 38 tooth sprocket for my 2003 ACE. Having problems. I have Cobra Exhaust, stage 2 jet kit about to be installed along with K&M high flow air filter. Staying with 17 count for the front. Now with all of that would a 37 tooth take away from my low end power? Getting new chain 525x120 O-ring, verifying that it is the correct length also. So questions I have:
1. 38 or 37 for rear sprocket?
2. 525x120 correct size?
3. (Most important) Where to get sprocket.
Thank you for your time.