98 5.7 Chevy vortec pistons
 

https://cimg8.ibsrv.net/gimg/www.tru...2b2434f07d.jpg
https://cimg3.ibsrv.net/gimg/www.tru...6c537fc0d4.jpg
Porous surface
https://cimg5.ibsrv.net/gimg/www.tru...2157efe23b.jpg
Another view... Some have a noticeable dent like a small one
https://cimg4.ibsrv.net/gimg/www.tru...d2fdcdb5df.jpg
It still needs cleaning but just wanna make sure what to do







I'm on the middle of rebuild. I found this.... 3 piston looks like has an unusual dent. It's a little tiny one that you can only see with a light in an angle. But touching them feels smooth and the dirt makes it look like cracked but is not. Im tight on budget and idk what I should do. Other pistons are in great state.