Stupid risk... The guy sounds like an idiot....
ONLY buy the if the ofset is 40-45mm (that should fit as long as you go 215 wide tire, 42mm is optimum.)
and.... and this is very important 4 X 108 bolt patern. Do not get anything else...they will noe fit.
a 20 offset would sit out about 1" father than the stock wheel, past the fender so you would rip the fender to pieces.