Why install a Flip-Top lid when he can simply use the Slide Card/Slide Tool to swap discs? Swapping discs with the Slide Card isn’t that difficult you know. And it doesnt involve cracking open your PS2 console.
P!mPdOG, seeing as you’re in the US and I’m in the UK, I can’t recommend any sites for you to buy Swap Magic and a Slide Card/Flip-Top from based on my own experiences.
However, I [I]have[/I] had a look at Swapmagic3.com and there are a list of sites there from a number of locations that sell the Swap Magic software as well as the Slide Card and Flip-Top lids. You might want to have a look through all of the links at the bottom of this page:
Like Jesterrace touched upon, your only other alternative is to buy a Network Adapter, buy a Hard Drive and get the HD Advance software so that you can boot up your games from the Hard Drive.