Engine Oil: 3-5k (Personal preference)
Gearbox: 15-20k
Transfer: 15-20k
Rear Diff: 15-20k
Coolant: Once per couple of years or maybe less (Personal preference again)
These are the rough intervals i stick to, engine oil i leave until the 5k mark.
Spark Plugs: Depending on Mileage every 10-20k depending on boost levels etc.
Leads: Every 2 years.
Fuel Filter: Every year or every 10-20k
Rotor / Dizzy Cap: Every 2 years.
All of the above are just guides and is my own personal preference, you ask others on here and you will get a totally different answer, to be honest as long as the parts and oils are changed on a regular basis you are less likely to have any related problems so i dont mind spending the money on these.
Ant. (Prepares to get shot down lol):lol: