Looking to buy 1990 Corrado G60 with a VR6 swap
 

i am looking to buy a 1990 corrado g60 with 84k on the body and the current owner swapped out the g60 motor and put in a vr6 with 80 k on it. does this effect the value? what should i look out for when buying a corrado? any advice or input would be greatly welcomed.