Toytec and sanorasteel are two companies that provide kits but you can lift by piecing together the parts and get away paying less in most cases.
Read up on what they provide and information they give, also many, many, many other guys have gone through this in other threads and can provide so much information that you will walk away being an expert in no time. One of the first couple threads under the 3rd gen section will be something like general information, within this thread you will find any question you will ever have be answered.