I'm building another ls vtec and i dont want this one stock. i would like it to be a high rev, around 9 grand what valves and springs would be best? i have a b16 head

 

mugen springs are expensive ($450), so are JUN($440 for the springs and retainers), skunk2 springs are pretty decent ($280) but i'd get the titanium retainers too ($180)...personally i wouldn't go inside the valvetrain unless i had other mods to do too like cams and racing valves

 

i have gsr cams and itr valves, dont know if i should use the valves though, thanks everyone for your help

 

Ferrea is arguably 'the best,' but you want springs and retainers to match your cams. Pick some aftermarket cams you will put in later, and use that company's springs and retainers. Otherwise you may end up with valvesprings that are too soft or too hard.