Lots of comments but you have which engine? Can’t google what don’t exist. If you have an overhead cam engine and I would guess that you do, there’s enough work to let the shop do it. You would have too many questions. Is that sprocket good, does it need cleaning? Who the hell thinks those should be timing marks? It’s just not any fun unless you’re crazy enough to enjoy that kind of thing.
Save money by fixing your brakes. No. I think it’s so easy but I have training and a lot of years of experience.