IF you're on a budget, but are looking for a darker, more overdriven sound out of your guitar with an overall tone change, may I suggest This

It is an entry-level, meaning it's not going to give you the best dynamics. But I bought one of these suckers when I didn't have a job and I asked my mum for some cash and she asked and said yes knowing what it was and for the price. I still use it to this day, but in the neck mostly because I prefer the bridge. I have a Seymour Duncan Hot Rails which is it's cousin make. The Hot Rails has some better dynamics, but this won't break your [allowance] bank.

I made this thread to help those with hardly any cash to upgrade their strat.

And a pic of it:

I got some good guitars, yo.