I have a 2006 Camry LE4-cyl, automatic. I have the following questions:

1. Can I convert the rear drums to disk brakes and if so what parts do I need?
2. TRD lowering springs - what impact do they have on ride quality? does anyone know what the spring rate is compared to the stock springs???
3. Is it possible to swap the Camry SE steering rack into an LE to obtain the heavy steering feel? Parts required?
4. Any automatic transmission fixes to lessen the mushy shifting?

Thanks for all your input!

 

The rear drum to disk conversion has been done before, an Internet search should turn up posts with a list of parts. You will need to find a donor car of the same generation that has rear disks. Backing plate, caliper, rotors, change the emergency brake system, proportion valve.

You can swap the steering rack, should be a direct replacement.