For me Dave the answer was both yes and no! I purchased the AMK complete chassis kit and have used several and many I have not. After awhile of looking at bolt markings and doing some research you quickly find out or start to have a feel for the normal. I had some AMK kit head markings that were exact to my originals and some head markings due to location your not going to see, so both of those were no brainers, but there were plenty that neither matched the actual bolts taken off the car nor other bolt suppliers that were on the car. In those cases, and there were plenty I opted to glass bead and re-phosphate the bolts. Another area the AMK kit/s come in handy involves the usage of the nuts and washers. All in all, I'd do the same thing again, i.e. purchase the AMK Kit and cherry pick!
If you have not completed any phosphate work to date, it's easy!