clutch damper delete fitting question (searched already!)

[floodo1]

aight so im going to be getting a stainless clutch line, so i figure its a good time to delete the clutch damper. however i plan to do it by simply plugging the "surge line" at the t-fitting. does anyone know what threads are on that side of the t-block-fitting?

what im referring to as the t-fitting is the block that the mc feeds into and the slave cylinder is attached to. the 3rd thing (that i plan to remove and plug) is the line that runs back and then forward to the 2nd bleeder block.

if anyone can tell me what threads that is, it would greatly helP! i searched and find no mention and the fsm is no help here either.