full floating wristpins vs. pressed wristpins

Depends on your meaning of "converting". That is a replacement bushing for a rod which originally was prepped to have a bushing, Unless you intend on resizing the small end of the rod to accept a bushing. That's a lot of metal to take out! That wouldn't thrill me if I was asked to do this!

A Tobin Arp rod boring machine makes it easy.

Tobin Arp PM-2500 Rod Boring Machine (Stock # 48) Honing Machines, Connecting Rod Equipment