Size of interior dome light

Im just wondering what the size is of the dome light. Im thinking about putting LEDs in the interior of my truck. Anyone know??

 

The user led solutions just did a group buy for the a set containing not only the dome light but the map lights and licence plate lights. It was only 30 bucks. He said he will be doing another group buy so pm him and get in the next group buy

 

Putco uses 1.50"(1.75" is stock and the LED is too big for that size) for dome light and 168/192 wedge bulbs for the map lights.

 

Here's a link for bulb sizes:
http://www.tacomaworld.com/forum/lighting/84308-lighting-faq-please-read-before-posting.html