I suppose the PPF did have some twist to it but I dont think it would be a as much as a rubber mount could allow.
The Sierra diff is solid mounted and has worked in plenty of locosts/roadsters, perhaps its a better idea to solid mount the MX5 diff all round. Replace the rubbers with some metal bushes and bolt the whole thing in solid.
Cheers
Stot
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1.6 Mazda B6 : Garrett TBO339 : 420cc WRX Injectors : FMIC : Microsquirt V3 : LC-2 Wideband : Toyota COP
Build Started Jan 2013 : OTR Aug 2014 : Build Pictures
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