rim question
 

i have a 97 tahoe 2wd and i was wondering will 08 z71 rims fit on my tahoe ? also if they do fit does anyone have pictures this?

No
 

I don't believe they will, they changed the bolt pattern in 07.

tirerack.com select your car, then pick some wheels...

I believe the 2wd Hoes have the 5x5 bolt pattern. If you had the 4x4 with the 6 lug pattern it would fit.

what would i have to do to convert to 6 lug?

You'd have to change your Axles out to the 6 Lug,
I'm not sure that would be worth it !

I've never done it personally but I know it's been done a lot as I've seen a lot of write ups on it. If you do a Google search on the subject you should come up with a lot of useful information.

cost
 

it will cost WAY more to convert your truck between axles, brakes, links, fitting, etc.

it will be much more cost effective to just find wheels you know fit...