Power steering box install question

[brossow]

Ready to install the power steering box on my '72 and have a question. The box I'm using is a good used unit and came with the four bolts that attach it to the frame. However, one is slightly longer (by 1/4") and has a 1" spacer on it. What's the function of the spacer and where does it go? Can I just get rid of it and bolt the thing right to the frame directly? I bought it already off the truck so I didn't see how it was originally attached and I have, of course, forgotten which hole I took the odd bolt out of when I stripped it for painting.

If anyone has a quick answer I'd REALLY appreciate it. The weather is cooperating and I want to get it bolted up ASAP.

Thanks,
Brent