first post, so just wanted to introduce myself a bit, share some of my experience, and ask a lot of questions.... Lol

I'm a previous owner of a fully modded 99 Toyota solara, this was a street legal track car that met its demise this past febuary.... It had a fully done up suspension package (JIC coil overs, energy suspension bushings all around, big brake kit, stainless lines, upgraded swaybars front and rear)..... My fiancée was using it as a daily driver, until some hag in an suv cut her off, slammed on the brakes, and clipped the front end. Fiancée is ok, she got a 2015 Dodge Dart out of that mess... And I recently purchased a 2005 Rx330 thundercloud edition, and want to mod it a bit.... Lol, the dart is still under warranty; and putting it through the knife may void it....

I know for a fact that the Camry/solara, Avalon, and es300 share the same suspension and brake setups are interchangeable.... I also know some have put RX330 calipers and rotors on the above vehicles as a direct bolt on.
Big brake kits exist for all platforms, but found this: http://pages.ebay.com/link/?nav=item.view&alt=web&id=151177785115&globalID=EBAY-US

I believe that it will fit the RX with minimal fuss, the caliper mounting bolt pattern is the same as the Camry/solara, Avalon, es300.... Even the highlander....

Also looking at some of the posts regarding the control arm bushings, I suspect the energy suspension polyurethane bushings will also work, that is if like me you want to eliminate some of the "marshmallow" feel.

I'll be looking to do this stuff soon (within the next 4-6 months)and if it works, I'll post pics up along with more info.
Feel free to correct any of my assumptions, as I'm new to this platform, I'm all about learning as I go

 

Good to see someone doing some modding. Take pics as you go!

 

I think this will work, not 100% sure....

Coming from the Camry/Solara platform I know some people that used the RX's calipers and rotors to make their own "big brake kit", so I know that the adapters should fit, the one thing I'm not 100% sure about is the rotor's center bore... I'll have to dig that info up, and give it a try.

As for the bushings I'm almost positive they are compatible...

 

Why not try KSport or even D2 for an RX330 specific application:

http://ksportusa.com/ksport-procomp-big-brake-kit/

 

I looked at those... might consider the k sports, and get their coilovers while I'm at it... But I like Wilwood's calipers more for some reason.