If you are repairing a collision you need to take it apart first, and see what is needed. You are not simply upgrading an otherwise good car. If you buy first and then disassemble plan to spend more and take longer, its setting up for failure. Kinda frustrating because I'm guessing you need to drive the car hence wanting to get things first, but it will be better in the end if you get it apart and diagnose it first.
The artist formerly known as SteedaMatt.