Motor mounts

[still w.i.p '68]

Has anyone used late model style motor mounts, in there trucks,
I sat the 454 in my truck to break it in, (and of course I couldn't leave it on the stand any longer without hearing it) and I used some late model mounts, other than one hole not lining up, what would be the problem with using them verses the original style,
that would appear to raise the engine up, and also doesn't look as strong...what have you guys used, my set up is a '68 swb, with a 454, and a turbo 400. Are there going to be any unforseen problems Thanks John