these are my last setup before i decided to run the cubs. these cylinders have about 10 hours on them. they were run at LS for a few hours and then some test and tune with gearing and tires here at my house. they made 77hp and 43 ft lbs of torque with rockets and 35mm pwk's. that dyno sheet is on the rocket website. the bore is 60 over and have domes that match this setup. the next bore on these will be 80 over using a blaster piston. the domes will have to be reconfigured for the next size piston which any shop can do. id like to sell the cylinders and stuff complete with the PD cool head but will seperate. the cool head will not come with domes as the domes will go with the cylinders. this setup does not use a spacer plate. you must have an aftermarket head for this setup. they run very hard and you would not be disappointed with them, i have just decided that my cubs run a little harder. i want $650 shipped for the cylinders, pistons, rings, wristpins, bearings, clips and domes. ill take $110 shipped for the head. i will do a package deal if someone wants all of it. i am open to offers as well. make me a reasonable one and we will talk.