plate bracket bolts: size & pitch

[juxt3r]

Maybe I'm just a big , but I've gotten nervous with a few friends in blue staring at my naked front bumper the past few days. I've got a bracket and whatnot in the trunk, but the mounting bolts inside the sled's "mouth" seem to have gone missing at some point.
Anyone happen to know what size bolts I'll need for the NA, as well as thread pitch?
Just need something workable until I'm able to get a Stiffy *cough*...

[Majik]

I am pretty sure that those holes arent threaded. Just get a nut, bolt and washer. That should set you up.

[MadMerv]

There is a special bolt that slips in from the top that has a small shoulder and a traingular plate formed into the top and it uses a standard 10mm nut, of which there are thousands on a Miata....steal two! If not, I've got several of the real thing in the "spare bolts" cans....in Springtown

[juxt3r]

Talk about timing, eh?
I just found the funky, triangular bolts in the trunk, along with the appropriate nuts and one of two lock washers...
...and I'm getting a Stiffy this morning.
Let's see if other things I want magically show up after a three day wait. Could it really be that easy? Let me just whip out the ol' shopping list here...