Here is a great post concerning the install of a direct port nitrous kit into a TPI powered IROC. Keep in mind this motor has been modified with an aftermarket intake (not stock TPI style) and ran 12.914 at 105.40mph on the motor. Best run on the nitrous was 1.35 seconds and 12 mph quicker on a 180hp hit.
Enjoy!
thirdgenfbody 
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