Here is a list of the parts that will be needed to fasten:
8 Pcs. of 90140-SD9-000 -- Bolts that through the bumper to the chin
3 Pcs. of 90192-SG0-003 -- Bolts for underneath (Long step, middle 3)
4 Pcs. 90501-SM4-003 -- Bolts for underneath (Short step, outside 4)
5 Pcs. 90222-S04-003 -- Nuts for underneath
2 Pcs. 90306-SF1-000 -- Clip nuts for underneath
4 Pcs. 90103-TA0-000 -- Screws to fasten the spoiler to the back of the bumper (wheel wells)
4 Pcs. 90331-S3Y-003 -- Spring nuts for the screws above

The only difficulty with attaching the spoiler to the bumper is that 8 holes do need to be drilled for the bolts to go through the backside of the bumper and connect to the spoiler. The CR front bumper assembly has the holes in it already but for the standard S2000 AP2 bumper it will require drilling 3/8" holes. To determine the location for the holes in the bumper to match up with the spoiler we dry-fitted the spoiler to the bumper and carefully marked each location on the bumper with a pen that corresponded with the nut location on the spoiler.