I just did it last year.
if you dont have a hydraulic press, you’ll need one.
I used the new conrod pin to push the old pin half out, placed new conrod on the new pin, used a couple deep sockets to line both cheeks up through the holes (and eye balled it) then pressed the pin all the way in.
Use feeler guages/ caliper before disassembly and write down all the dimensions. how far the cheeks are apart, conrod clearance, stuff like that. Then, try to get as close to that as possible.
You have to true it afterwards. If you did your best at getting it close, that wont be a huge job.
* Disclaimer *
I did replace my conrod, I have not run it yet. Soooo... That’s how a person can do it. Don’t know if it is the best way.