My donor engine (possibly 1978 V40B Caterpillar ) I need a model and serial# to order parts. I spent countless hours google searching what little information I have now, it has a downdraft carburetor, muffler beside valve inspection plate, Cat pn#CT7N1086 crankcase breather, prestolite IDJ 4012 distributor with sensor and external ignition module ( holley gold box) any and all help would be greatly appreciated
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