Welcome to the V8 board. This is the best place to converse about all things V8 Buick related. I happen to be partial to the '71 but I have a couple of '70's as well. Always keep in mind that those subtle differences in each model and year make a difference in the availability and price of those specific items. For example, I have been looking for a set of front bumper guards for about two years now and haven't found a set I deem usable. When I find a set the price will be determined by the condition of the parts. Enjoy the process. Use it as therapy for the stress of the rest of your life.
I have tried the Pennsylvania SOS they only register business information and directed me to the Pennsylvania Dept of transportation, which is where I was given the information about the last registration in 1999. Thanks for everyones opinions on the headers, I really do appreciate it.