The parts weren't too much so I got them. When I was at my local boat shop picking them up I was telling the owner about the left head being cooler and it looks like I may not have needed to do all this work. *He said that on about 90% of bubble backs the right head runs hotter and when pistons fail on them it's usually on that side*.
Either way, it's an old motor so I'm glad I did it anyway and plus I got more familiar with the motor.