Re: IHRA HP Ratings
IHRA generally uses NHRA HP rating but doesn't increase them just because NHRA does. There are many that are rated lower. They do change but not as often as NHRA. I have a partial listing but you really should contact an IHRA Tech Official. Jim
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Jim Wahl....NHRA #2239 S/SS - IHRA # 8 Stock, D2 Stock Champion (forever I guess)
2019 Baby Gators Stock Champion
2009 NHRA D2 National Open Stock Champion
1982 NHRA D2 West Palm Beach LDRS SS Runner Up
Past President, Southern Stock / Super Stock Association. 
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