cusco motor mounts with a-350 here.
no rubbies
i would recommend hard ass motor mounts anyways because it helped me with the vague clutch feel, even with the clutch spring mod. the difference was amazing. the stock motor mounts made me feel like i forgot how to drive stick, even when i had thousands of miles on the car.

This is a year later, but I’ll throw in my experience.

I bought the A350 used (was on a track car beforehand), with all of the used gaskets, and other hardware. Gaskets are almost shot, but still have worked (I should have gotten new ones though for peace of mind). Hardware looked like it was in decent shape. After getting the stock exhaust manifold off, the install was straight forward. I have had 0 rubbing anywhere and only have positive experience from the header. I am also on TRD mounts (STI is the same).