I 'm new to lexus,i just bought a 1994 gs300 and i need a master cylinder, and the bushings under the car.
Where can i buy those?you guys know a shop where i can get them?

 

The master cyl you can probably get at a local parts store.
Which bushings do you need ?

 

you can find many of your parts at rockauto.com pm me if you need a 5% off coupon code. I've used them a couple of times for generic replacement parts for my other vehicles and I have no complaints about them. If you want OEM replacement parts try irontoad.com you'll have to request a quote, but they can probably help you out.