I bought some second hand ITR valve springs but I dont know which ones are intake or exhaust. There are no colour markings on them, but I read on here that intake items are taller and from looking at mine four are definately taller and some are slightly taller than others but nothing definative. They were jumbled in the box so I dont know what goes where.
http://s24.postimg.org/8d4fpk951/IMAG0547.jpg
http://postimg.org/image/f9yct96yx/
http://s24.postimg.org/8d4fpk951/IMAG0547.jpg
http://postimg.org/image/f9yct96yx/