Wow, you've owned it for quite a while! You must have the 73-76 trunk lid, which I believe has a larger key lock than the 70-72. I am not sure what the go wing option is.. My dads Swinger was a factory go wing car tho. I'm on the same boat with mine.. My original engine is long gone, so I am going to build a 360 for it (the one that came from my car) and dress it up as a 340.
I checked out your Resto thread and your car is looking good!
Thanks!! I highly recommend the AMD rockers, they'll make for a much cleaner repair. Those other brand half rockers are nowhere near the correct angles and contours.. I'm sure your outer rockers will be bad behind the quarters too. You should make a thread for your Resto on here!
I know what you mean.. It's hard to keep motivated at times, but I find doing one project at a time helps a lot, and really shows you've accomplished a lot. Hopefully this thread helps!