Odd Comment in Mopar Action..

I read a couple of mags on a regular basis..they give me an over all of what is going one, etc..they are usually give good info but I was taken aback by this comment since this is a common swap..

From Mopar Action page 88 oct issue

"for anything other than straight-line (read dragging) use, the Green Bearings are not to be used. " .. and he wouldn't use them in a '61 300g eben it it ws used for dragging..

Any comments ?