Thank friends by the information. I am building a 1/35 Hobby Boss plastic kit of the GMC Bofors 40mm Gun, I suppose a French version. The kit has a distributor cover for 5 cylinders and the engine block also has connection for 5 cylinders. I was trying to confirm if there was a version of engine (352 or other) that used 5 cylinder. If I want to build it as real as possible I will have to accommodate the 6-cylinders on it.