It all depends on previous maintanence. My car has 105k miles on it and is a 96. It runs better (well basically the same as it was perfect to begin with

) then when I got it with 28k on it 3 yrs ago. About the only thing I do on time in my life, is maintain my 240
Since day one every 3k miles (3100 max) I change the oil with an OEM nissan filter and mobil 1 synth. Every 15k I swap out the fuel filter. Every 30k I change the filter in my slushbox transmission and fill it up wiht 4.8 - 5 quarts of mobil 1 synth atf, likewise (minus filter of course) in the diff with mobil 1 synth gear oil (75w 90 IIRC). I clean my air filter with every oil change, mainly because its covered with 1/4" of junk from my true ram air setup though. I do all the other mainanince items as well on time.
Like I said I have a 104k mile engine that runs like new. Some people have 100k mile engines that have all kinds of problems because of lack of routine things.
This think will go another 200 no problem, Im sure of it. Mabey even with the next mod whitch will be a conservative 8 psi FI setup pieced together, and with proper fuel precautions.