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Old 12-10-2017, 05:26 PM   #1
Afirehawk1
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Location: Valrico, Florida
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Need help on 66 c10 Stepside Cross Sills

Looking for some intel.

1. How many cross sills needed? 3?
2. How many reinforcement sills? 3?
3. Rear cross sill. Does the top of the rear cross sill mount directly to the bottom side of the bed side bottom? Appears I have a small gap?

Thanks

Last edited by Afirehawk1; 12-11-2017 at 08:24 AM. Reason: Additional info
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Old 12-11-2017, 12:42 AM   #2
Afirehawk1
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Re: 66 c10 Cross Sills for Stepside

Anything? Thanks
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Old 12-11-2017, 09:11 AM   #3
Afirehawk1
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Re: 66 c10 Cross Sills for Stepside

Looking for help, thanks
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Old 12-11-2017, 10:12 AM   #4
The Rocknrod
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Re: 66 c10 Cross Sills for Stepside

There are three main cross sills and a rear support. Which on a step side makes up the back end of the bed. And two supports.
http://67-72chevytrucks.com/vboard/s...06&postcount=5
If you go to Mark-K they actually have instructions and drawings you can download or look at.

Last edited by The Rocknrod; 12-11-2017 at 10:20 AM.
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Old 12-11-2017, 11:55 AM   #5
Afirehawk1
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Re: 66 c10 Cross Sills for Stepside

great info, thanks!
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