yeah... b/c you would never be able to measure the inducer w/o takin alot of crap off, does he have a reciept or any proof of buying an evo 3 for it ? also check for oil leaks, have someone start the car and stand behind it, look and see if it's burning oil.
make sure the tranny shifts smooth, if it doesn't it most likely won't until you have it rebuilt. i bought my car in may 03 with a slight grind in 2nd gear which eventually led to not being able to use my 2nd gear by dec. then last month i finally had it rebuilt. lol