trouble with new radiator fitment

[gramps77]

I suppose I should of measured the old compared to the new, but the new radiator I put in doesnt fit the mounts as it should.
I found there are 2 different size sets of the rubber "bushings" for the top and bottom and think that might be what I need. The problem Im having is if I try and put any bushing in the top, the upper radiator mount plate/cover doesnt line up correctly. It fits maybe a half an inch high. So what I had to do is not install the upper bushings for now.
Is it possible I have one for a big block? How can I tell the difference?