7. Now to the driver side front. Picture is under the car driver side facing the rear.
In the same way as the passenger side, locate the same hole and take out the nut, insert collar, and screw back into place the nut but not tightened.
Clearing out the debris, I still had trouble sliding the collar on this side as it wasn't aligned perfectly but I proceeded to insert the collar as much as it could go
and used the nut to screw back against it to sort of force slide its way in. There shouldn't be too much tension as it goes in so don't overexert here.
8. For the driver rear. Picture is positioned from under the driver side facing towards the passenger side. Index finger is pointing at the bolt.
Pretty much the same as the other side, Remove bolt. insert collar, screw bolt back into place but not tightened.
Same for the adjacent bolts in the triangle if needed. I had to align the triangle on this side as well to get it to slide in.
9. Last step is to torque the bolts and nuts up.
Sub frame mounting bolt & nut
156.9 ~ 176.5N.m(16.0 ~ 18.0kgf.m, 115.7 ~ 130.2lb-ft)
This doesn't apply to the 2 adjacent bolts and nuts. I don't have the torque values for these but I did about half the strength on these vs the subframe bolts and nuts.
Don't forget to tighten all 4 sides as well as the 2 adjacent on both sides if loosened.