I'm 16, I've never worked with cars before
I'm willing to walk you through it, bolt by bolt, when it comes time to do it, but, and I mean no offense, the above are the first two of many reasons why I won't go into the details of such a switch just yet.
It seems like it was only yesterday, but in fact, more than a decade ago, that I had a 16 year old who was all gung ho on car projects, and to his credit, many eventually came to fruition, but there are others that died in their tracks for not thinking them through, or without the funds to make them a reality.
You need a good deal of wrench experience before you undertake a project like you're planning, or have plenty of ready helpers who do. The whole project, start to finish, and working full time, is a 30-40 hr job, when everything goe smoothly and you have all the parts on hand.
The alternative is that you take it to a shop, and pay dearly to have it done. the upside is it gets done, the down side is you don't learn anything, and you shell out alot of money.
You're very likely to decrease the value of the truck by about a quarter, but if you intend on keeping it (At 16, things change daily) that doesn't matter.
Here's a few of the major things you're going to need before you even twist one wrench:
Flywheel: Your's doesn't have one, only a flexplate and torque converter.
Complete clutch: Pressure plate, Friction Disc, and new throwout bearing.
Complete Clutch pedal box: This includes the master cylinder.
Clutch line, Flex line, and slave cylinder.
New Brake Pedal, pedal box is OK, but you need the narrow pedal.
R-380 Transmission, preferably with an LT-230 attached, Your's may be OK, ratio wise, but I think the output from the ZF is different than the output from an R380. You'll also need the V8 bellhousing for the R380.
Almost all of the above can be found used, but it may take awhile to find all the bits. New, and you will drop $4000 without batting an eye.