Originally Posted by SPADGE

Pete
Also as a quick visual reference

L1 has brackets either side to bolt it to the car and a small yellow mixture screw
L6 has the same brackets but a larger white mixture screw
L8 has no brackets and a white mixture screw
SOME P8's are as above but 99.9% won't have a mixture screw at all and no brackets.

There are also 2 types of L8 one has a red sticker and is off pre-lambda cars and one has a green label (like yours) which means it is a post lambda one.