I have got my hands on a 79 K5 blazer with a stock 400cid engine, The truck is mostly stock but has had a part time kit and free wheeling hubs installed sometime in the past. I also have a set of axles out of an 87' military K30, the Dana60 has manual hubs and open diff, the 14Bolt FF rear has a detroit locker and they both have 4.56 gears. I want to build it with a low centre of gravity so i want a 4" lift and a crossover steering for my D60 I'll save the Histeer for a later time. Can i combine a shacle flip kit with the 4" front lift springs? how would it be height-wize? I plan on running 35" or 36" tires to start with. (easier to get approved for road use here in norway). Now to the real problem; the vehicle control people dislike anything out of the ordinary and generally means that all cars and trucks should remain stock. There are ways though, I need documentation for every kit I plan on installing. Theese documents must include: 1. Producer (manufacturer) 2. What vehicle it was made for. 3. your assurance that the kit was made for my exact vehicle model, (my VIN-number must be included) 4. If possible any safety tests done by other agencys og companys than yourself (ex. German Tüv) On top of this they need the original paper, no copys or faxes!!! and if you could possibly make a statement on them, that putting a D60 and a 14Bolt FF under a K5 Is possible and safe. (bigger brakes for bigger tires and so on) The problem with theese people are that they have no clue about cars and technical issues but they want you to believe they know everything. Could you produce documents like theese to go with the kits?