I'm planning to do this myself, and I noticed that most people get different parts for the mod. If you notice very carefully the article writer is using Navra's part number 47287 T5 size with 1.7W. High wattage means brighter lights. I've seen LED mods before but they don't scatter the light enough and thus you get some bright and dark spots on the cluster.

This is their website.
http://www.narva.com.au/products/bro...epremium-wedge

They also sell the socks for them, part numbers for red T5 socks is 49942BL

Other colours are here.

http://www.narva.com.au/products/bro...-globe-sleeves

Hopefully this can be of some help.