I completely agree u-conn. Having had many first gen birds starting out in the 80s as built meant little to me although whatever went into the car for upgrades had to be Pontiac. But after an ugly divorce and loosing my 7 vert and 8 hardtop I jumped out of the game for about 12 years or so and in 18 picked up a 8 vert 350 auto 1 legger and the first thoughts I had was stuffing in the 455 I had on a stand in the garage and the rebuilt 71 455 ho heads and intake in the cellar. but after getting it running ( it sat for 26 years on a cement floor in a barn) and chasing all the numbers down I realized what i had was a true 60.000 mile all numbers matching ( except the alternator) 68 a/c vert. After some soul searching and remembering all the 350 and 6 cyl engines i had evicted I came to the conclusion that after this car had evaded punks like me for over 50 years it would be sacrilegious at this point to gut it. Just to make sure I wasn't tempted I sold my Pontiac performance parts to a friend and have never looked back.