I don't know if you are referring to John White (aiconversions.com) in the comment above, but the one conversion he did for me some years back was professional and worked just fine. That was my only experience with an AI conversion, short of the factory conversion that replaced the entire ring.
BTW, if you want to plug your business here, I would suggest at least becoming a subscriber, if not an APUG advertiser.
John lives here in Ann Arbor and I had one done by him about 8 weeks ago. Works well and very reasonable.