no!!!!!!!!! dont go to attarco. i bought a 20r from them a year ago and they do not know squat about engines. i got it home installed it and it ran for 600 miles before it compleatly died. the head was a p.o.s. the cam broke in half under the center bearing cap, ate the head, sent metal all over, and spun the crank bearings. went to rebuild and found that the crank was not originally from that block. they put it together from spare parts then sold it.