If your samurai already has vortec mounts in it, that is a good start. It is going to be a squeeze to putting it together, and VERY time consuming. You need to know what makes the vortec run, electronics, fuel system, transmission/transfer case, etc. You will probably need to do some welding and fab a lot of parts. In able to make this work, you really need to be determined to make it work. It is not cheap, but having a running parts rig will be a good asset. It is not a plug & play (but you can probably find a P&P wiring harness).
This will make your Samuai very front heavy, not the nimble little light weight go anywhere rig it started out as. And you will always be working on it. Have fun. Take lots of photos, post up questions and how it is going. Any one who has done a swap understands when it just seems to have stopped, but you can get through that.