0331 head replacement

What one to get, where to purchase ect which ones come with valves springs ect

Clearwater Cylinder Head

Alabama Cylinder Head

Both are very reputable vendors that have supplied hundreds of these heads to unfortunate 0331 owners.

Warranty varies a bit; around $400-$500 fully populated and shipped to your door.

When you check their websites, choose CHRYSLER heads, not Jeep.