As someone who bought a second-hand Caiman, and then got a Gator board from Stan may I just say its a no-brainer.
It's a cost-effective way to transform an already excellent DAC. If you ever listen via headphones then the Gator board will just amaze.
And even for a coward like me, installation was a doddle.
Stan-is-very-much-the-man
lossless > Raspberry PI-3b+ > allo Boss > Van Damme Purple interconnect >
Myryad Z210 CD Player > Chord Chameleon Silver+ interconnect >
into Magnum IA170 amplifier > Van Damme Blue 4mm cable > Mission 752 Freedom Floorstanders
Headphones: Audio Technica ATH-AD700 Open-back