WG answer for greg

[Nate Stuart]

60x12x1.2(mm) is the exact bolt size you want.

I also have a (very)brief write-up on the same mod I did on my car somewhere
at: www.mswanson.com/~nstuart


Later!
-Nate

> The bolt to modify the WG cap can be found at NAPA.  It is a red 12mm
> metric bolt with 1.25 or 1.5 threads.  The bolt you want is between 2 and
> 2.5" long.  Cost is $1.68.  The plug can be removed by a few sharp blows
> from the inside.
>