NISSAN VQ35DE User Manual
Page 11
Listed above, is where you should insert your 14mm bolt to hold the
transmission bracket into the mount.
Once you’ve got your engine in place, it’s time to modify and install
the cross-member/front and rear mounts.
Using your grinder/dust mask/eye protection/ear plugs, grind the
posts on the rear QR engine mount, so that it fits into the rear VQ
engine mount bracket. You should have to grind roughly 3/8 of an
inch total to get it to fit inside the bracket. I have a picture shown
below, which points to the places that have to be ground.