aluminium heatsink hotend

A dual hotend design I'm working on, using a heatsink, pulled from a PC CPU.

1x heatsink
2x 6mm tapped holes
2x M6 stainless threaded rods (drill 3mm bore)
2x Aluminium heater blocks
2x M3 thermistor modules
2x 12v 40W resistor cartridges
2x 0.4mm nozzles
2x 6mm - 3mm push fit PTFE connectors
2x PTFE tubes (6mm OD 3mm ID)
1x 50mm 12v brushless fan