Patience young grasshopper... this is not Facebook, we are not on here with answers 24/7 but I promise you, the answers you get will be better.
Nobody to my knowledge sells a "complete" rebuild kit with everything. You can get bearing kits with or without syncros, both will come with all the seals you need. Beyond that, you will be buying individual parts. Buying "all of it" will be very expensive and you will have a lot of leg work tracking down each piece... here is a manual from Motive Gear:
drive.google.com
Parts vendors that I use include USA Standard Gear, Motive Gear, Cobra Transmission, Allstate Gear, Rock Auto, eBay... gear5th, superior.auto.parts, sparksurplus, acerl are all good reputable sellers.
Tear it down, get a look at what you actually need and go from there.