Will this wing mount to the factory trunk lid holes without drilling new ones?

Yes. This wing uses the OEM spoiler attachment points. Before installation, verify your trunk lid hole spacing matches the wing's factory mounting pattern to ensure a flush fit.

Does the wing create any trunk lid interference when opening or closing?

No. The M4 profile is designed to clear the trunk opening arc. Confirm adequate clearance by test-fitting before final fastening, especially if your trunk mechanism or weatherstripping has been modified.

What surface prep is needed before painting?

Sand the raw FRP surface with appropriate grit to promote paint adhesion, then clean thoroughly before applying your chosen basecoat and clear. Follow your paint manufacturer's prep guidelines for best results.