Getting the manifolds off
DW-40 Rust Release to bolt on warm engine, let sit for 5 min. 
Use long breaker bar, but gently push until you hear the bolt give. Use a new 13 mm socket, keep it square on the head and use two hands to support.
Out it comes.
If you brake one use snap-on Extractor Set, 20 pcs. Stock#: E1020
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Mike's Specialty Porsche Service
Mobile Mechanic Specializing in Porsche and Select Automobiles
http://www.mikesspecialtyautomotiveservice.com/index.html
Early 1996 / 97 Boxster, 130 k, De snorkeled, IMS, Top Speed Headers.
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