you need
1. a B-series transmission
2. a new upper tranny mount (i think place racing makes one for the conversion)
3. manual LS ecu (i forget the model #)
4. manual LS wiring harness
5. manual pedal assembly
6. clutch master cylinder
7. hydraulic lines
8. shift linkage, shifter, and all shifter mounting hardware

i could be forgetting something.