Before anyone yells at me for not reading the conversion section, I did read it. Maybe I didn't read it close enough or something. Point is, I already have disc brakes on the front of my truck, it came like that when I bought it last August. Yay, right? Well maybe not. Because they're 5 lug and the back are 6 lug. Not great if my spare is a 5 or 6 and it won't fit the one that blows on me (karma's been working like that recently). So I don't know what kind of brakes I have, or the ones that I can switch to. For your convenience, some pictures.

In no particular order, the words on the side read :
24 (dot used for multiplication in math goes here) 5, 14008847, D15, K5, MINTHICK
Can anyone help?