15 is too much and i wouldn't get an auto either
skyline > commodore though
(friend of mine - sevenangrypenguins - got a manual 33 with 70odd thou on the clock in good cond for 13k)
good to know - im use to mud terrains on the hilux so noise is no problem!
im always after a bargain - last pair i bought were 2nd hand continentals - very good