A friend of mine has a MacBook2,1 mid 2007 with a dead Combo Drive (long story short, someone at the Apple Store put the wrong drive in), and I have a MacBook7,1 (mid 2010) that I tore down for parts.
Normally I'd just try this myself but the drive is at my parents house an hour away and gas is $3.49 a gallon. Does anyone know if they're interchangeable?