A friend of mine is thinking the same thing. He's on his 4th V6 now after various bearing and headgasket issues. It's funny with the V6's. Some run great like mine with very few issues while others have nothing but problems. He uses the same machinist as I do, same gaskets, tune etc. yet his luck just sucks.
We ran his car with another new motor. It ran well and went 6.95 1/8 mile on only it's 4th pass so hopefully it will last several years. He told me though when we left the track. "One more time and it'll have a SBC in it, I'm tired of fighting it"