[Whodeeny]

I have my 427 Cobra order placed with ERA and I expect delivery in September this year. I am beginning some of the planning and wondering which transmission and rear end ratio I should select. The car will be used strictly on the street and I would like to do some cross country cruising with it when I get it completed. I am planning on installing an alloy block 427FE (about 500hp) with 15 inch pin drive wheels and 295/50 X 15 rear street tires. I am thinking of using a Tremec 600 with a .82 fifth gear ratio and a 3.31 rear end. That would provide approximately 2575 engine rpm. at 75mph. I could also select a Tremec 600 with .64 fifth gear ratio and a 3.54 rear end which would provide 2150rpm at 75mph. The fifth gear would just be used for highway cruising with the .64 ratio.
Any thoughts, recommendations or advice on this subject would be appreciated.