nice one Matt , I wasnt brave enough for the full race set.
I'm already concerned about cabin vibration, and wanted to be incremental in adding the mounts as the labour for the lower mount means I dont have the option to really remove it!
(VWR say lower mount only is not advisable with race mounts , its either all 3 or none)
....I'm guessing that the reason for not mixing 2 solid 'Race' mounts with the 'dogbone' mount is that as they are solid with no rubber/poly, any energy forces would transfer and potentially overwork the dogbone rubber in the third mount.
VWR were happy to install only their dogbone mount (Fast Road version) and it was myself who decided to later do the other 2 as well.
So, I'm concluding that it's only the 'Race' mounts that need all 3 to be the same.
Re your concern about cabin vibration, John, it's the 2 engine side mounts which add any vibration (and glorious
Grrrrrrrrr! sounds) but it's minimal with the VWR 'Fast Road' version. It is subjective though and I know you've read my review covering this.
I really like your idea of swopping to that PFF85-505 poly and am going to do it.