Seriously, this isn't the case. A 30 year old engine is a 30 year old engine. What are you tinkering with on a 3.7 that you won't be with a 4.3 or 3.0? Nothing. You talk a lot about this, please back it up. Any 3.7 by this point has an alternator, a 4" hx, and likely cam seal repair. So what's...