Boss 338 Wheels **GROUP BUY**

[SCOTI]

Originally Posted by brossow

The good news is they're a direct bolt-on for your '00 GMC.

00 GM's are 6-lug.

Measure your truck and compare it with the offset of these wheels. Pre-'70 will almost certainly require a spacer. '71-87 rear ends are 3/4" wider on each side (1.5" total) and may not need a spacer, or may only require a thin one rather than the full adapter-style spacer. Only you can determine for sure if you'll need a spacer.

Everyone needs to be clear: the wheels were retooled for a hub fitment issue, not a backspacing problem. If the backspacing was wrong for your application before, it'll be wrong for your application now. Some people used spacers in the past as a workaround for the fitment issue with the front hub, not because it was needed for backspacing.

I can't run more than 5.50"BS on my 74. Anything more & it will rub the inner wheel tub/mounting hardware.