big block options ??

There are different fitment issues depending on exhaust choices, transmission, etc. In my experience there isn't much difference in the amount of work. My Barracuda was going to get a 383, but then a 440 just sort of came along so that's what it's getting. With the suspension set up properly you won't notice the extra weight (everything we've built was all iron, including exhaust manifolds - except for the aluminum intake on my son's Barracuda).