Hey guys just wondering what I might need if I decided to go with Toda spec B camshafts, upgraded valve train, toda cam gears... would i need to get new pistons to raise the compression, I have a jdm gsr and i believe the compression is at 10.6 .
Also if any of you have any experience with this mod any input would be welcome.

 

yes to all of your questions. If you don't want to raise the compression run smaller cams. You can get away with it, but you won't make as much hp as you would otherwise.