Challenges with spark plug change depends on the tube layout of the 180s. My plugs are easily removed.
I have yet to learn who manufactured my 180s. Although, they appear to be a custom build in the 90s by a resource of Glenn Pascal, a Pantera restorer in Pennsylvania who passed several years back.
I have presently began a cosmetic freshening up of my GT5 and will shift the heat shield to the decklid a part of the process. I prefer exposing the 180s when the decklid is lifted.
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