Skooter -- I faced that issue when I upgraded to a 261. The original pressure gauge didn't get damaged, it just pegged out all the time, so it was essentially useless. I did the oil pressure gauge swap swap (retained my original cluster, just swapped out the gauge) and it is working great -- I get actual data from the gauge now. I recommend it. Multiple vendors sell it. I think I got mine form Jim Carter Antique Truck Parts -- a long time supporter of this web site
