s/6 to 440 ? engine mounts

I have got the enging mounts in and the trans in place but.... the tailshaft is hitting the top of the floor right where the cross member goes, not letting me put the cross member one needing about 3/4 or so... to get the bolts through the cross member...
and if that not bad enough...just noticed that since I moved the stright axel forward... the oil pan is only 1/2 away from the axel.... its a 7 quart.... any ideas....