Welcome!
Now run away!
Seriously though...think about what you want from your car.
If you want lots of HP (more then 300RWHP)...go V-8
If you want lots of HP Cheap...go V-8
If you want respectable HP, a unique look...stick with the 6.
Remember all the other stuff that has to get replaced with the V-8. Front end, spindles, rear end, springs, transmission. etc.
My advice. Build up the 6 for now a little at a time. Nothing wild. See if it's for you. While you do this, start doing V-8 suspension modifications, 5Lugs, 8" rear, springs, etc. Then, when you are all done with those mods, then it will be easy to put in the V-8 if you desire, or you can keep and work on the 6. Most of the really expensive head parts for the 6 will not lose value overtime. It's not like buying a set of edelbrock heads, using them for 10k miles, and not being able to sell them for list price again. 6 cylinder performances heads are used to begin with. Mine for example. I know that if I wanted to putin a V-8, I could sell my Aussie 250/2V manifold and head for the same amount as I put into it. By the end of this winter, my car will have everything necessary for a V-8, except the engine. All upgrade suspension, transmission, brakes, etc.
Now, I have the option to change if I ever desire too. But I will warn you. I embarked on that path above to a V-8...and I ended up keeping the 6.
Slade
PS, look at people's websites here...you'll find all sorts of things to do.
