I have a quick question for you guys.

I have all of the tools needed but I am trying to find the correct size tap to use for the steering box.  I picked up a 1/4" tap and it just seems way to small.  The drill bit with it is 13/64ths.  I though you were supposed to drill the hole out with 7/16.  A 1/4 tap would be too small.

So my question is, what size tap should I use or am I just picking up the wrong size tap from the hardware store?

Thanks for your help and write up,