no it is not

its in the same place however the union on a frst block is threaded for the t2 oil return as it screws on

on erst block the union is a push on fitting rubber hose push on clip up

if you are fittign a T3 on a frst replace this union with an ERST one or the thread will chew the rubber hose up

s2 and frst both had the small pipe inside the block also directing the oil feed down into the sump dont think s1 did.

Me, lewis and danP were chatting about you last night melv, and the burberry cap