We use to run OPTIMA's in the Warlock then the Eliminator..but when we rerigged the Eliminator, we picked Odyssey's..2 BIG MOFO's installed under the backseat so we could access..The first set of OPTIMAS worked great for 5 years years..when we replaced with new set..the second set sucked...When we sold the Warlock, the new owner got 4 Optimas in the deal..we took 2 back to NAPA and they replaced no questions asked..It's a roll of the dice with the Blue Tops..reds and yellows seem to last quite a while...