Will to have a 66 done like mine will cost you $800 + $22 S,H, & Ins. He'll have you take it to a smith and have the barrel removed then completely disassemble it and send him only the receiver & butt plate. You'll have to insure it for full replacement cost because my smith said it is easier to get a new gun than just a receiver. If you send the entire gun it will take quite a bit longer and will have to go through an FFL.
He does beautiful work. He also does leather & custom knife maker. I have a big Bowie and a coffin handled boot knife and tow loading strips that he made.
FYI, I sent it via FedEx to his FFL. But he sent it back to me via Priority Mail. The Post Office told him and FedEx told me that if it is not capable of firing they do not consider it a firearm and they will allow person to person shipping. Go figure.