i had my little r block w7 dynoed it is nothing to flash 12.6 comp 4 inch stroke 4.100 bore early w7 heads 2.100 intake 1.6 exhaust smallish headers 1 7/8 stepped to 2 inch with 3 inch collector 1050 dom pump fuel here ,here are the aspirated run and then a sniff of gas ,some of you guys may have seen it on fb