Hey! I am looking at a 99 35' CC with a pair of verados. I noticed these cracks in the splash well. Are these of a major concern or just normal "stress" cracks that happen over time?

That condition is common to many C.C. hulls and could be gel cracks or wet transom or beginning of structure failure. What brand boat ? There may be some history of this available. As an example I've dealt with old Mako C.C's and they usually did this and lead to a wet transom but seldom structure failure. Ed

Not abnormal imo. What’s the boat and what engines are they.