jgillott - ill second your opinion. my buddy has gotten me interstates for 20 years in many vehicles. they are really good. my 02 cummins has had 2 for 8 years, and still going strong. when the current 18 2500 batteries die ( which they will much sooner than an interstate ) ill go with interstate, again. as a random thought - my gone 16 2500 gasser the battery only lasted 1 year, or 20k. junk. hope the current truck has a different manufacturer for its batteries. cheers comrades!