455 in a V6 Cutlass frame pad issues

[nicknewbie]

So when I got my cutlass it had a hack-job olds 350 in it with two spun bearings and a exploded lifter(it still ran like a god damn top) but it fit. When I started looking for a new motor I found a 455 out of a GMC motor home for 200$. when i got it home it got some love and a new set of gaskets and a 850 cfm Quadrajet BUT the alternator bracket and flex fan doesn't clear the hood. I started investigating and the body side motor mounts seem a little tall and the brand new motor mount only fits on one side. So i was wondering are these 307 or 260 v6 mounts and what can I take the shortest mounts off of, I heard talk of omega frame pads? Heres some pics http://i.imgur.com/NPxnU.jpg And heres a video of it and it starting and idling
http://www.youtube.com/watch?v=UZsOLhKOEzU Thanks!

 

[FE3X CLONE]

You need 307 frame pads and engine mounts.

Maybe the previous owner installed different frame pads?

 

[Oldsmoletick]

I've seen that before.....Those look like the buick v6 pads to me, like FE3X said get the correct pads either from a olds equipped g body or b body (260, 307, 350, 403), don't mix up lefft and right.

 

[nicknewbie]

The car was originally a v6 so I guess the pads never got changed. I'm going to go down to pullapart this weekend and I'll pick a set up then. Does anyone have a picture of the 307 mounts for reference?