Got a 2000 LQ4 6.0 and was wondering if the piston pins are semi floating?

I have yet to tear into the motor but I'm just curious so I can get the right tools when the time comes. Are they traditional slide in, slide out units sealed in with a snap ring?

Also, does anyone know where to get good SCT tunes for 6.0/5.3 motors?

 

2003 and earlier are press-fit pins.