Motorhead,
I build and drive late model vehicles. We purchased a GT350 for our shop car to play with. Out of the box, maybe the best car I have ever driven. The ride/handling is amazing. Good power, and head turning noise!
We are playing with ours to add a little more power... looking for around 1200hp. So to answer your question, nothing ever changes. How much power do you want, and how much do you want to spend?
The 5.2l voodoo platform is very similar to the 5.0l coyote with exception to the crank. We pulled this car apart at 500 miles to see what it was made of. It is impressive and does have room for improvement.
We push the 5.0l, with stock bottom end, to over 700rwhp all the time. Built motors over 1200rwhp no problem. So, don't worry about the cubic inch size, it will make all the power you want and more.