big block options ??

I need to biuld a motor for my car I already have a 383 but it needs a complete overhaul I can buy a 440 for around 150 dollars but its a basket case this is just going to be a street car with about four track events a year. I know that the 383/400 motors are lighter but I was thinking about aluminum heads so just let me know what you guys think.

thanks shiifty