The plugs work perfectly to seal off openings while refinishing your valve cover! Before painting, apply a little heat (start at 48*C/110*F) to the tops of the plugs to soften the PLA and give a gently press. I didn't get even a hint of paint creep under the caps.

Fitment was perfect for my cover with the stainless steel hardware from RSpeed, the caps for your coil pack holes may be oversized. Just use foam on those two since you're not covering for a washer. Will be adding a cap for CPS shortly along  with a file for 1.6L valve covers.