Did you happen to notice the date code on the engine? Only reason I mention is because this is a one of none 67 belvedere. All 67s absolutely had an LA 318. Whomever "hastily" assembled the car must have placed a poly in place of the LA. I have a 67 belvedere as well, and it had an LA. Not a big deal and quite impressive what you have done to it.
Have you ever thought of changing it back to an LA 318?
