It really doesn't matter which way you go if your only adding 100hp over stock.
I promise you 1 thing tho, as sure as you are bored with your car stock you will get bored with 100hp.
If I were you I would go turbo, it leaves you room to grow. Look at a Spencer Fab kit. They have one that has the fattest torque curve I have ever seen.
http://www.ft86club.com/forums/showt...43#post2485743