ARRGH!!! Which engine?

[elks]

Well I am now starting to plan my build for my grandpa's 72 longbed. I want to build the engine and drive train first.

So I am looking at options. I will have about $6000 grand to build my motor. Note this is for the parts, all labor will be done my self. My big issue is what to build.

I am thinking about going crazy building a massive horsepower truck that looks like a sleeper. I am talking about a truck that pulls up to the light and trows you into your seat then trows you again jumping gears all the way up.

My original thought was taking the 350 in it (stock never rebuilt, has a thrown rod) and building a 383 Stroker that puts out some good horse power. Also then gearing.

Or going big block power and making a tire burning monster...

Either way I am looking for a hot rod type of vehicle that may go for a cruise every once and a while...

What do you think? I could also take a 350 and go pretty extreme.