complete set of 16, new in box SBi valve springs, p/n 160-1150, Made in USA. Never installed, they were not correct for my application. Not certain, but may work best for a 360 C.I. engine? Some Spec's are: closed pressure: 98-1.650, open pressure: 256-1.220, I.D. : 1.080, O.D. : 1.494. Can...