Hi I was wondering if anyone knew what difference between a 92 Buick regal motor and a 92 Bonneville motor were just by looking at it? or is it not possible to know just by looking at it

If they are both Series 1 3800'*, then the mounting brackets would probably be different between the two. But still you can swap them.

Thanks for the response. I also switched the engine to see if that'* why the hoses of the radiator were expanding but the new engine makes them do the same. would you happen to know what the problem could be there ?

Only thing I can think of is, the hoses are old. About ready to burst really. Replace them both.