Basic PS2 modding suggestions needed

I am looking to get my old (first batch) PS2 modded. I was just wondering if any of you ppl out there have some advice for me. I know there’s a lot of shady people on the net selling some of those mod kits. I’ve heard you can mod it w/o having to solder. Anyone know about that? If not, is it similar to soldering the old PSX? TIA.

check out this link http://www.modchip.com/ps2/v56pnporder.htm