RCM 1/8 motor mounts > compatibility between models?

Hello,
thanks all for your replies :), yes I think and I hope this thread will help a lot of people.

For the moment I have the following motor mounts :

Kyosho MP7XX

Mugen MBX5 > Fit Thunder tiger EB4 (S1/S2 = S3?)

Xray XB8 > XB8R > XB8TQ > XB8EC > XT8

Ofna Hyper > Hyper 7 > Hyper 8 > Hyper 8.5 > Hyper ST

Losi Eight

Asso RC8

Cen Matrix

GS Storm

My question was wich one can fit which car without any modifications?

Can we use an MP7xx one on an MP9?
Same for MBX5 and MBX6.

It would be great if someone of Rc monster could help us.

Thanks for your help :).