Below is the Bill of Materials for the Slot 8 Support board:
Ref(s) Value Mouser P/N
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U1 74LS33 595-SN74LS33DR
R1, R2 10K 1206 SMD resistor 588-AS12J1002ET
C1 0.1uF 50V 1206 SMD MLC capacitor 80-C1206104K5RAC7867
Parts kits including the PC board are available from The Glitch Works for $5 USD + shipping. Some substitutions will be made for the above list. The kit is a complete parts kit and includes everything you need to build a Slot 8 Support -- you supply the solder and tools.
All resistors and capacitors are 1206 body SMD components. U1 is SOIC.
R1, R2 are pull-up resistors, their values are noncritical. Anything from 2.2K - 47K should be fine. C1 is power supply bypass, 0.01 - 0.1 uF is fine.