351 cleveland

I have a project. This is my first ford project. I have done mopar and pontiac projects before, but this is my first ford.

Project----I am looking to take an old beat up 90 ranger and put into it a 351 cleveland for the purpose of 4 wheeling and trail riding. Also, i know i am going to have to entirely guy this truck out... it is 2 wd and a 5 speed manual trans. I am looking to make it 4wd, but should i keep it a 5speed or change it to automatic? I need all the info you could offer!!!!
Right now i really dont have a budget....its kinda a "when i got the money buy some parts" kind of project......

I need horsepower to climb all sorts of terrain....

could anybody help??

I need some ideas.

Thanks