I have an 84 K5. It has the stock corp. 10 bolt rears. A friend offered me a set of 3/4ton rears for it last night. A 14 Bolt rear and a Dana 44 front. They are lower gears than my present rears(4.10 rather than 3.73) and I really want a lower gear ratio. With my weak engine, sm465, rear ratios, and 33" tires I have to start out in creeper gear all the time and don't have much power in 3rd or 4th gear. I have 3/4 ton rear springs and am happy to convert to a full out 3/4ton K5. Does anyone have some information I should know? He said it has the criss crossed shock mounts so it should just bolt right up I guess. Is the 14 bolt wider or narrower than my 10 bolt? I would love to lose that stupid narrower rear and set my rear tires out more. Oh he said the Dana 44 has drum brakes, that doesn't really bother me is there anything really wrong with that fact?