The Novi 1k will support 10's and 125+mph trap speeds. It is capeable of 15 psi max. The 'old style' 1k's used a single belt to drive the blower and the accessories...using an underdrive pulley would spin the blower slower and make less boost, if any at all. The 'new style' 1k's have a two belt setup.
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~Dan
2001 SVT Lightning 
89' GT : Taking up garage space and waiting for a buyer...
Rice Hater's Club - Member #11
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