Rod Bolt's?
 

What does everyone replace the stocker's with? ARP? Or is there any better bolt's out there.

Also can putting rod bolt's in be done in the car?

Well there's ARP but it's recommended to have the rods resized. Katech sells theirs that are the same dimensions as stock rod bolts and therefore resizing isn't as big of a deal. They can be done in the car. Do some searching and you'll find some writeups on how it's done and what people are using