i importedmy r32 gtr almost 6 months ago and as yet havent had to spend a cent on it except for normal servicing.
if you import all oils etc are replaced as part of compliance so thats not a worry but yes check compression .
main prob with 32's would be the age of them so check carefully for rust ( i was lucky and havent found any on mine yet) but its something to be weary of with the age of the car whether its an import or aus car anything 13 to 17 years old would be checked for rust so its not a specific import versus local build issue