Hi . I advice you to use the Iso tolorancing tables to find out it , but I should tell you that the correct answer for each case is found by try and error .if you have the chance of it .because many many items infect the tolorancing ,such as heat transfer ,vibration, material,machining quality ...
Some monthes ago , I was very interested in that field ,I have found many many useful information from net , but unfortunately I have not them with me at present , but there was a software named "Franklin" which was a simulator for 8051 , try to fing in in yahoo search engine . Be sure...
I am a mechanical engineer from Iran . I agree with Greg Locock . I think , he should consider his interest .If he is graduated , I think it is better for him to work in his field , as body design is related with many other branches form styling (wich is an art work ,graphics , clay modeling) to...