A local machine shop did the finish hone. I built the motor for my JBL Cobra. Divorce forced the sale of the chassis.
Buyer already had a motor so here it is. I've built several motors in the past for other projects as well as aircraft motors. I'm a certified/licensed aircraft engine technician as well as an engineer. If you have worries about the build, you could have a local engine shop disassemble, check clearances, and reassemble for about $300. All parts in this engine are NEW.