Even before owning the S2000 i already knew the OEM lip had to be a standard. I purchased a 03 S2000 a month ago, didn't come with the lip, so i ordered one through Honda. My buddy works there so i managed to get it at a discounted price ($200 off).
I picked up the lip today, very happy about it. I go to install the lip and i noticed i comes with all hardwares, but no instruction. I figured i'd install the lip the best that i can using common sense. I got the lip to fit, but was leaving roughly half of the hardwares out. I said to myself, this isn't good......so i come on S2ki and use the "search" to find out the correct install procedure. Found it and noticed i had done it all wrong.....so i went back out and started everything all over again.
Having the install sheet in front of me helped a whole bunch. Piece of cake. The only thing i left out was the screws along the end of the lip where it attaches to the fender. I got all 7 bolts under the lip, it seems to hold up strong. My question is, do i have to worry about the ends not being screwed in....it was cold as heck out, so i did it as fast and efficient as i could. Anyways, just sharing my experience..

...heres the result

 

i think u should be ok, but when u get a chance just put em in to be safe.

 

yeah, i would put those 4 screws in, just to be on the safe side. a lip coming off at 55 mph could do some nasty damage.

 

Your lip will be held on fine without the screws, but the screws will help make sure the fitment is tight and perfect.

 

I will do so. Just wondering, it seems like they'll be a though fit, the spring nuts seems like they'll be pretty though to fit in. I tried and gave up....not even driving the car anymore so i'll try again when it gets warmer.

And another question, there is a pre-drilled hole on each side of the fender wells, is that the corrected place to screw in the bottom hole? I would just have to make another hole for the top.

 

Correct, one hole is already there the other hole you have to make. I started it by using a push-pin.

 

i got my screws from home depot

 

i still have the four screws and spring nuts intended for it laying around, i'll take the effort in securing them.

Thanks guys.

 

ap1 definitely needs lip. looks great!

 

that looks so sweet dude. i gotta get the oem lip for my silverstone ap1