Low Power Rock lights..

[ATLRoach]

LED Lights:
http://www.superbrightleds.com/cgi-bin/store/commerce.cgi?product=UTIL
LED Tubes:
http://godfathercustoms.com/catalog_build_part.cgi?cat=Lighting&subcat=Body%20Lighting&ocats=Air%20Suspension:Apparel%20and%20Accessories :Convenience%20and%20Safety:Engine%20Performance:E xterior:Godfather%20Customs:Interior:Suspension:&subsubcat=Under%20Car%20Lights&part=AGL-LEDUCK-W&vehicle_year=&vehicle_model=&uni=1

[4inT100]

A couple of those from "superbright" looked like the ones from Roundeyes.
Here is a good comparison: http://www.c4x4.com/Tech/LEDrocklights/rocklights.html

[ATLRoach]

Cool article..