Another thing to look at...did you remove the coils from the car and put them on out of order? I ran into a no-start condition after my rebuild, and one of the culprits were transposed coil packs.
But I suspect that if it was running prior to the belt slipping, and nothing else was done by you other than the HB and crank sensor, I would also check the sensor grounds, both the crank sensor and the cam sensor. Even the signal wires could have been damaged when the belt slipped, but I imagine that would be shown as a trouble code.
Welcome, downwardly mobile yuppies, to the dawn of the Age of Nefarious.
1993 SSEi - FrankenJinx - dead and gone.
1994 SSE (136K strong) - 180* t-stat,HD alternator, most unequipped SSE on the club, XM radio, Kenwood CD/MP3.
2006 Chevy Malibu Maxx LTZ - Custom 2.25" manifold-back exhaust w/FM-80. Probably the only Maxx with this system.