I have been looking around for a 1970's model 60 before I get the cart to far ahead of the horse if needed will I be able to get all the parts especially the feed ramp if needed? also what would be considered a fair price for say a 90% model 60? with only being able to inspect the the bore and chamber it seems hard to know what you are getting into with the older 60's .I am determined to get one of these mid 70's model 60's, any replies or advice would be greatly appreciated ! THANKS