[Rustys14]

The difference between the 4.09 and 4.36 is pretty mild but its definitely a worthwhile upgrade. I'm running a 4.36 ratio in both of my cars at the moment. I mostly run at Summit and I've found that the 4.36 makes 3rd gear more usable with my stockish sr20. I drive my car on the street every now and then and I haven't noticed too much of a difference in cruising rpm either.