If you get the car, run it as-is for a while as you sort out any NECESSARY work that needs to be done- you may find out that you're perfectly happy with how it performs. Then you can actually drive it and enjoy it as opposed to chasing every whiz-bang, shiny, latest beat-all part that comes along. Do they all help? Yes, to some degree. Will you ever notice it? Most likely not. Does chasing every little gizmo stand a good chance of not only draining your wallet, but will also turn your car into a perpetual garage ornament instead of being out on the road where it belongs. You've said in other threads that you don't want a "project" car- why do you insist on turning it into one?