Just had new plugs, leads and engine flush: together with replacement of O-rings in EAS valve box. Truck (99 HSE) now purring like a kitten; and riding like a magic carpet (if you can block out the noise of a thousand rattles). Aaaahh the pure joy of the P38. Next projects; cruise control (dead), new remote fob (lost on Mtn Is) and answer to lean while parked for while. But no hurry while I enjoy the 'ride'