Yes I have a question on my block the block just got out of the machine shop its an ls built to drive daily but also ready for the track it has the block guard and i noticed between the sleeve and block where the coolant goes there is rust and i was wondering if that would have any affect on the block oh and also there is sort of a hole not to deep in the outside of the sleeve. if anyone need pictures give me your email address so you can check it out. I would really apperciate if someone could help me out on this that way i know if the machine shop fucked me over cause they said the block checked out good.