Help me pick a gear for my combo
Money aside, the tunnel mod I did for the 42RH a-500 wasn't that bad, it's a weekend worth of work. Don't let that scare you away. It also opens up the possibility for a wide range of transmissions to fit as well.
Back to the question 3.55, should serve you well for street/strip duty.
Here is a handy dandy calculator to help you decide, it even has a tic-toc-tac:
http://vexer.com/automotive-tools/speed-rpm-calculator
Happy trails, :burnout: