It should be stated that I own rally cars, and therefore don't mind a bit of buggered paint, and as such, the wrong person tio ask that question. You can get it done relatively easily as there are specific tools around that will do the job. I've done it in the past with anything from a pair of multigips to an anvil in the boot plus two mates and a piece of roll cage pipe.
As for suspension, like anything, you get what you pay for. The front struts on the 25 are custom Pedders, made in melbourne. They're excellent. (see below) I run 225 lb springs in it, which is a bit heavy for rally, and a bit light for tarmac, but works well as a happy medium.
You can also do things like put more thread on your castor arms (may need machining to initial threading size) to get a greater amount of castor. I'm also tend to make adjustable lower control arms by installing rose joints (Note:Not a legal mod).
I run two different spring packs, although both run the same springs reset. I also run an extra 8mm leaf in both packs. For shock adsorbtion on the 25 I've had great success with Pedders comfort gas. Honestly! I don't advise this for all Corollas, as the 37 had something similar and they sucked badly. (I hae Bilsteins in that one now). The tarmac pack also has the main leaf flipped so the eyelets are upside down. This allows the spring to maintain some of the original curve. Unfortunately I don't have any picture of the springs handy. However I'll include pics in both high and low trim.
Hope this helps.
R