I would like to look for those TRD springs.

I recently in contact with my friend Takashi and we started to talk about the times I was in Japan and I told him I now have a Previa and the expansions of our family compared to 2006 when we had no kids. LOL.

I will ask him to find more information about the TRD springs, but also the IRS as there are many in the auto dismantlers there. But for now, I can't do much but just think about it as I dont have place to rip everything apart.