I have seen post on this set up that people are saying you have to take a chunk out of your frame rails. NOT!!! After the rails are cleaned off the stub comes up from the bottom and the tower plates are from the top. It sandwiches the frame rail. There is a small part of the frame rail lip that needs to be trimmed. The strength added is awsome. Somebody said this conversion weakens the car. No way. COILOVERS generally ride like a box of rocks. Dont buy them if you are not going to race a little. You will sacrifice ride with them and some extra $$$ too. You CAN get this set up cheaper than $2500. I am under $2500 no problem. I have a $500+ big brake kit from ECI brakes, tubulars, and a 90's Mustang GT power rack. This conversion can be done without a shop. You just need the proper tools and a very level flat chunk of concrete to work on. Did I miss anything else? Please let me know and I will try to help you all the best I can.