OP: Not sure how much experience you've had modding other cars, but I'd suggest you start with a plan, which should come from what your objectives are. One of the reasons so many guys on here spend boatloads on their cars is because they just start throwing parts at it, without a clear objective.
What are you wanting to do with your car? Drag races? Road course? Just play on the streets?
4:10s are some serious gears for a street car, even if you don't plan on running the highway a lot. And if you add a blower, like some are encouraging you to do, you're gonna pull those 4:10s right back off, unless you're building a purpose-built drag car.
So, start with telling us why you're modding the car? What is it you want it to do, or do better, than it currently performs?