ex header help needed

No i am not sure if they are round because i am going off what the shop told me i will look at the heads myself. All info i have seen or read leads me to believe they are round like stated posibly alittle carbon clogged. The shop that was doing the work is capable but i think alittle header install job wasnt the big money job they wanted and may have slid me thru. I was looking for easy way out having lift installed headers and collector hook up all at once while i was traveling should have done it myself. thanks for info and will update soon