Installing them was definately a lot of work, but the shop I had them installed at (Sonics) knew their way around a VQ. The work was done in about 4 hours and he already knew about the problem bolts. When it came time to remove them he busted out a massive 4'-5' breaker bar!
The rest of the time I spent at the shop was dyno time. Highly recomend Sonics. Munkywurks didnt want to touch my car; He hates header installs on VQs.