Re: what do i need to do to make this an 11 second truck?
11's should be attainable with that amount of money.
The problem will be, once you start going that fast, you'll probably start having other problems like trans, propshaft etc.
First, you should do all the safety mods. (12 sec recipe). That should run you about a grand.
Then I would say the easiest way to go would be to get a bigger turbo w/3" dp, alky kit, torque convertor and the most important part: a good tune. You should be able to get into the 11's with the above, but like I said it will cost you in other areas.
The above parts would be about $3k, but if you need them installed that would cost you too. After that, I'd start paying attention to the trans and suspension.
Check out various members builds and you'll get an idea of what works.
Welcome and good luck.