ok advise is needed
 

i am about to take car in on tues morning to have some work done valve covers gaskets and timimg belt,i bought the car with over 120k and not sure what else would be handy to change while car is in that state.also i was wondering if there is anyway to find out if parts have been replaced on car ie is there a way to find out if the turbo's have been replaced while under it's original warrenty.i am asking because chritmas is comming and want a stage 3 minus giac from santa and not sure if he will do that if i cannot figure that out lolol,i put alot of k's on car since as well i am sitting at 190 and change wich is another thing would car last or be able to handle it.i see a few cats buying s4 with 120 plus on them and doing the same or something the same.mind you the car is bone stock and been kinda maintained well by me but pre owner not sure as the manual stops at going to audi at 32000km.so any help or input would be great thanx