Bill,

Mine is a 96. These are all aftermarket add on and are pretty standard for anyone putting in a hotter chip. With a hot chip it is not that hard to melt the pistons if you don't keep track of the exhaust temp. Being able to see the boost is also nice.

Stephen

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85 300D 305K miles WVO(105K so far), Mine
82 300SD 235K miles BIO-D, Wifes
96 F250 SC PSD 4X4 285K MILES BIO-D, Ours
89 BRONCO 182K MILES sold
Finally Compression Ignition Only!