The 98 Guy's are 5/8 I believe. The 1" is stock for 04+ and the even thicker ones are for the Comp GM's, or at least that's what I think I read on another forum. If you can fit it the 1" is a nice upgrade for these heat soaked engine bays.

1. I just joined today, so I'm not sure yet, but by how well layed out and packed with info this forum is, in due time I feel that the answer will be yes.

2. N/A

3. I can't say yet, too soon, but I feel that I'll pinpoint "those guys" soon enough ;D

4. Yes, but luckily not a one I am a member of ...

I just joined up on here, in spite of owning... a W-body :P 05 Grand Prix. But I figured identical drivetrain depending on year and trim (as is with suspension and many other miscellaneous parts), and some VERY knowledgeable and helpful members from what I've seen out of my Google searches, I ...