Where to position MAF sensor on tb45 Turbo

hi guys
i am in the process of putting a turbo on my tb45 and am just about to start running the intercooler piping, but i am not sure where i should now position the MAF sensor.
Whether between the intercooler and intake manifold, between the turbo and the intercooler or between the air filter and the turbo?
The piping will all be 2.5" apart from the pipe from the air filter to the turbo which will be 3"(same size as maf piping)
Also does anyone know where i can get an adapter to screw to the end of the maf pipe in order to join a silicone hose joiner to it?
The BOV will be mounted just before the intake manifold on the last section of straight pipe.
I have attached a drawing of how my piping will be layed out

After the air filter before turbo.

Thanks Robo.
Do you know of an adapter to puton the filter side of the MAF that i can join a silicone hose to?

There are adapters available, sorry I have not had the need to buy 1 myself, but search on ebay I think should give results.

Think your after something like bottom left in pic.
sorry it's all I had

If you get stuck, an adapter should be fairly easy to knock up with some tube and plate welded together.
but make sure when you adapt to seal it properly for leaks.