I am WAY, _WAY_, too smart to express a personal opinion on a topic this sensitive.
But for anyone out there thinking me unaware:
The Catera has aluminum heads. Period.
And I AM aware of this.
However, you did not come to this forum looking for your daily dose of BS, you want counsel.
So here's some counsel if you have the time to read it all the way through and the good sense to understand the message:
http://www.parttrackers.com/library/1/24/50/
Yeah, I realize it's a really long-winded piece. But as a favor to yourself, understand the good part is just starting when you read the words "
triple yttrium electrodes".
Good luck. If nothing else you can delight in knowing the HUGE can of worms you have opened.
The Catera has aluminum heads. There, I've said it again!