I am looking for information on crossover from Keil to Ilco,Curtis,Taylor Star, Dominon, etc. I am a locksmith with pit stop pop a lok here in McAlester ok. We have bought out 4 locksmiths in the last few years and have a growing collection of Keill keys. Currently around 48+ different blanks and 350+ keys. All are still usable. Customers like to have original keys for restorition, but we need to know the crossover to their original locks. I have contacted Ilco but they have no records and have tried the Internet but still no help. Any information will be greatly appreciated.