Okay, I am starting to accumulate the performance parts for my 72 Fury. Going to have a 700 plus hp 505. Not needing a drag car/but a respectable street car. Am talking with Strange about a custom S60 rear end. I have some ideas, but want to hear from the collective reasoning of the group. 1. Final Ratio? 2. Housing Dimension (not sure why Strange is asking this, and I do not know the answer) 3. Perch Location (I don't know why Strange is asking, but I am using the current stock spring location) Thanks for the help and advice!