well not hardest more like time consuming. Im polishing up my upper intake COP covers and TB. So far I have the upper about half stripped and am working on the rest of it. heres some pics.
when i changed my turbo there is a bracket thats nearly impossiple to get to and it seemed like it was welded to the block. i could only turn the wrench at the most an 1/8 before i hit. took well over an hour to get that one litle bitch out. i was at the point where i wanted to cry i was so pissed. oh and i cant see the pics