Just recently installed HIDs to mine and my friends trucks. I have an ’04 Silverado and he has an ’04 S10 Xtreme. I have 35W 5000k HID lowbeams from CustomHID and he has 55W 5000k HID lowbeams from DDM Tuning. Here is the difference between 35w and 55w hid bulbs.
Ive heard the 55w will melt your housings after a while…tell your friend to keep an eye on em.
I put a 55w kit in my cbr motorcycle, melted lense housing in about a month