Mine are at Divco and A/C Specialties. There was a kitplanes article about it a few years back and the guy said he paid extra for Divco to expedite his case. I'm in no rush so the 3 month turnaround is fine, might be worth asking about if you need it faster though.
I have used Divco and Crankcase Services. Aircraft Specialties for crankshaft. Aircraft Engine and Accessories is not anyone I would recommend. Charge the same for a crankcase overhaul and all they do is dye penetrant and inspect which in my case they didn't do a good job at. Also ground two sets of rockers off square so they started chipping pieces off the foot on the valve stem tip.
Lycon did my case with the “O” ring groove machined in the case to eliminate the silk thread. They also did my crank and rods. Was a fairly quick turn around time.
Central Cylinder told me that Lycoming will not take any cylinder orders in 2022 as they are trying to catch up. Also, Superior cylinders.......if ordered today would probably
not be delivered until September.
I'd like to find a set of new Milleniums SL32006W-A20P if anyone knows of a contact for them.
Send them to Tulsa. Divco and Aircraft Specialties and several other great shops are within walking distance of each other and while you're at it grab lunch at Evelyn's (located in the middle of the Airport, just up from the Tulsa Air and Space Museum) for some of the best southern food around.