Motor mounts (biscuit type)

Recently I had my 8 3/4 rebuilt in my 71 Demon 340, was only laying one black line. Just after I got it back on the road I thought I'll try it out. It was nothing major just took it to 3,000 rpm & dropped the clutch. Well it seemed like all hell broke loose. The drivers engine mount decided to let go & the fan destroyed the shroud. Cost me $400 Australian to get one from the states as no one here stocks them. When we replaced the mount with another factory style one I looked at the broken one & it said made in India, go figure.
Since then I've been too scared to do another burnout in case it happens again.
Was looking at the above thread ref the Poly-Loc Mount Set. Does anyone who have these recommend them as I want the problem fixed.
Cheers,
P.S. I can't believe how small the factory ones are.