I have a 66 Bonny convertible.
I am wanting to replace a 389 with a 455. Are the engine mounts the same? Are they going to line up or am I going to need to fab something?
Any suggestions by anyone that might have done something similar?

Ok so far so good. I have the 455 mounted and in place. I had to use the old 389 engine mounts and modify them just a bit. So far it sits in there well, I hope to attach the tranny up this weekend and see if it all goes without a hitch.
Only thing so far is the crank pulley from the 455 wont work as its hitting the bonny cross member. So I will either find a smaller crank pulley or chop some of the cross member.
More updates to follow.

If at all possible, could you post some pictures of what you have done. that way if another member is interested in doing something similar they can have this information. Just upload the images here. You can do that by going to advanced

Ok got some pics here and more in my profile.