Wisner 8x20 Conversion on Wisner Traditional 8x10?

[neil poulsen]

Checking on www.archive.org, I see that Wisner made an 8x20 conversion for Wisner 8x10 Tech field cameras. I have one of these conversions, and I'm wondering if they can be mounted on a Wisner Traditional 8x10? I know that they were designed for an 8x10 Tech Field or an Expedition.

If so, how well do they work? Are they tight, or is there play in the rails? What's the maximum bellows extension?

Thanks in advance.