My sons ford 383 efi has a 125shot on it now we want to go up to 200hp. its fully built. it was my old blower motor but only has 9-1 compression. 125 got it 6.93 1/8th. havent seen any nozzle that post more than 150 maybe distribution issues. this nozzle is located in the elbow just before throttle body. Thanks for any input.