We finally found a 261 Chevy (Canadian Pontiac) inline six but it is in Nanaimo British Columbia and getting it across the border and down to Gilbert Arizona is not easy. Any BC rodders coming to AZ for the winter and have room for it ?? No hurry.
I'd just have it shipped (land or sea), and avoid the headaches at the border. I have a complicated story about a carburetor being brought across the border (BOTH directions-I said it was complicated), but I won't go into it here; you'd think I was attempting to smuggle Osama Bin Laden across. Good luck to you and your new 261. I am Butch/56sedandelivery.
Maybe we should give up on this one and find one stateside ?? But they are so common north of the border.