Re: Poly mounts wont line up, damn.
so i put my poly mounts in today. it took all day long. the whole front end was already off, inner fenders also. what a PITA. amongst other things this did not make my day. i was ready to burn the whole garage down.
i had the rpm frame pads, i had to remove them and trim the ears off clear down to the tube welded in the center, where the mount bolt goes through. the poly mounts have a weld in the corner where the stock mounts do not. the mounts weren't that bad but removing those mount plates grinding them down, painting, and reassembling was a nightmare. the drivers side took my dads help to get the pad unbolted.
i forgot to get out of car pics after the trimming was done, i was way to pissed to even think about it, i did snap a pic of one in the car.
anyways moral of the story is that i had the same problem the OP had, bolt holes not lining up, even after the triming. i set the stock v8 mounts i had next to the poly v8 mounts and there was about 1/16 difference in height, which isn't alot but when you add the other side in you are now a full 1/8 in off, and when bolt holes are drilled a specific size there isn't much room for error. i had to pry the motor to get bolts to go through, pita but got it done.
anyone else going this same direction, have fun, and remember to trim the top ears off PRIOR to installing the frame pads, or you WILL be sorry. i first put them in when the front diff was out, now that it was in, and i wasn't pulling it out again it was terrible.
END RANT