did you renewed your brake fluid?
Also, get stainless brake lines.
The spongy feeling is likely caused by too much flex. in the rubber brakelines and/or old brake fluid.
Another option is go for a big brake kit.
You can fit the Supra 4-pot calipers without any modifications, and together with the Supra rotors this will be the cheapest upgrade.
Then you can also fit the TRD bbk. Will significantly improving braking and the brake feeling.
Which version are you looking at?
JZS147 (till mid '97)
JZS161 (late '97 - current)
I have a JZS161. The cars are pretty good. Very much troublefree. You need to check if the cam belt has been changed according to service schedule and check the lower balljoints, these need to be replaced after 3-4 years.
Heat formed springs? ;)
These type of springs are not lasting long.
Heat formed springs are not holding its spring charge, so they will drop the car lower and lower
No problem though if you think that your car is not lowered enough
I have Apexi WS coilovers, and these are great. Good handling and good comfort.
Springs ... errr. some of my IS200 friends in Europe are using V-Maxx springs, and they like them :lol:.
Any V-Maxx users NZ <_<