Early A Trans Mount Rubber Style...Unobtanium?

I dragged my Imperial Services transmission mount out today to see how it was gonna fit and found it's approximately 1/4 in taller that my original. Wonder if the taller height will make a difference?

I bought one of these several years ago & not only was it a bit taller, the bolt locations were off so much it was impossible to use. Ended up putting my original mount back in.