Roller cam and lifters question

B3422w5 said

Not sure Justin
These are the ones he uses.

https://www.hughesengines.com/Index...Y2sgIkxBIg==&level1=TGlmdGVycw==&partid=31339

Click to expand...

I wonder if he's welding the oil hole for the pushrods. I don't think I'd want any welding done on the body.