I tried NHRA rules to see what combo was legal in E or F I gave have up for her car. My 73 SD built about 40 yrs ago was built as an F. I found a 70 body. I thought the 74 was heavy in the front. I talked to John Herslow who held the record in E/SA with his 73.He recommended 4.56 gears. I couldnt get car hook locally with them. I see she is very fast. I also see I think father has a Mustang.
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