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How did you snap a lug bolt by stopping? That should never have happened. Same with the rear spring. A spring should not snap because of stopping. Thats unsafe, and I hope you had an inspection done.
As for the racelands, their a decent entry level coil over for the street. They are for street driving and not race use in anyway. Dont expect the best performance, but for dropping the car they work well.
Define "pouring out"? The water pump is made with a plastic impeller on pre 1997 models. They were known for imploding catastrophicly. Replace it with a Steward metal pump. They are top of the line for the E36. While your doing that, make sure you replace your rad hoses, coolant explansion tank, thermostat, and the thermostat housing with a metal one. The thermostat housing was again plastic and known for cracking and leaking.
I personally use BimmerSpecialist.com for all my OEM part needs. Fantasic customer service, pricing and shipping. Other places include Pelican Parts.com and ECS Tuning.com BMW parts and BMW OEM auto parts online Pelican Parts - Porsche Parts & BMW Parts & Mercedes Parts - Automotive Parts and Accessories - Porsche & BMW & Mercedes OEM / Performance Parts for Audi, BMW, Mercedes Benz, Mini, Porsche & Volkswagen - ECS Tuning