Rear gearbox plates spacers

Hi.
The four spacers (all 3/8 x 0,15 long) with same studs (3/8 x 4. 7/8) that go to the rear plates (gearbox cradle) that engage the rear frame lugs (from up to the bottom one) go on the drive or timing side?
Thank you.
Piero

they go on the side opposite the engine spacers - so timing side.