Greetings! When I took out the old slider on the back of my Sprint, I noticed two holes in the bottom channel. These are not rust holes, clearly they were drilled. Are these original, and if so what's suipposed to go in there? Are they for draining the channel? Where would they drain to?

Thanks all!

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Cecil Hawkins
San Diego, CA
1971 GMC Sprint

Before (http://www.chevelles.com/showroom/Cecil/FrontDriverSideView.jpg)
After (http://www.chevelles.com/showroom/Cecil/NewBlueFrontDriver.JPG)