Welcome, I'm relatively new here also and this seems to be a great group. Interested to see pics of your GP. If I was you, I would consider a 400 or 350 Pontiac swap. Bolt in and HUGE difference in power and driving enjoyment. Had a friend with a T-top 81 GP with 400 power and it was a great driving car. On the other hand, with the low miles and reliability of the 301, it should last forever. Classic Pontiacs Rock.