Another stem seal question!

[E4EVV]

Can t work this out , I am changing the stem seals on my second hand TSR pack C head before I fit it to a 2.0 btm end in my motor. Problem is this head has got two different types of seal in it exhaust red and inlet blue now i only have the standard blue vag ones to go in. Both are slightly different design. Is there meant to be two different types or does TSR put the red ones in as uprated items?

Anyone

[Wayne]

Standard blue, the red ones are a different supplier.