Always something eh! Is there room for the bolts to live between the flange and the new bracket? If so could you pop the yoke off, slip the bolts through and bolt the yoke back on?
Nope, there is maybe a 1/4" between the two. Think as a temporary workaround, i could do a 1310/1350 ujoint witha a 1310 flange. This gives me some time this year to actually wheel it. I could then look at doing a different bracket