Quantity   Component name
1 × A 4d systems oled-128-G1 (http://old.4dsystems.com.au/prod.php?id=78) the G2 should work too
1 × Any NEMA Gps
1 × The Honeywell hmc6343 (https://www.sparkfun.com/products/retired/8656) retired but can be found else where. If you know how to tweak I2C code it wouldn't be hard to get any compass moduel to work
1 × 5 way switch for navigation (http://www.adafruit.com/products/504)
1 × Propeller micro controller