I'm finally getting 4.10's next week! i'm so excited cant wait to feel the difference and join the rest of you guys who seem to be loving the new gears!!!

my question is - when i bought my larger tires, i ordered a new speedo gear that would bring my speedometer back to the right operating order instead of being 5 mph off. now that i'm getting 4.10's, should i install my factory speedo gear back in? i thought i read somewhere that the gears will bring me close to stock feeling with 285/70/17's, so i'm guessing put the old speedo back in. Everybody's suggestions and opinions are greatly appreciated!!! Im so excited cant wait till next week, i'll just have to endure mad school work and a couple of tests...
thanks again,
John