Did all 4 brakes today i went and tested them on a quiet road 120kmh-0 in 3 Mississippi's without engine braking so i guess i didn't mess up horribly.
I had a minor setback when i overtorqued one of the guide pin bolts i managed to find a replacement despite the threading being an odd size. The original is m8x23.5mm but a narrow thread (i called the local GM dealer they didn't have it in stock or didn't want to sell them to me,) the one i found was m8x25mm i used a 1,5mm washer and medium threadlocker though i've lost faith in my torque wrench.
The replacement bolt is 8.8 grade steel i hope that's fine.