The GM 3.8 liter series I and II V6 pushrods were my favorite engines because of the power and smoothness of the ride. That being said, I've no idea if you have the 4 cylinder or the V6, nor do I know what you call a challenge or a ride in the park when referring to repairs.
Here is a youtube vide on how to change the series II V6 head gasket.
https://www.youtube.com/watch?v=Op6gzMRZgKA