thanks will have a look what i have for the job tomorrow the other thing i was looking at was astra 1.7td a/c pipesI used spacers to move the aircon pump forward. About 1 inch if I recall right. I will measure it up for you. That way and with a little careful bending the pipework and the manifold will just fit. Moving the pump forward will mean you need another length aux belt. I'll check that for you too.
You'll need longer bolts for the pump too because of the spacers
the bolts are not a problem
im now looking at using the usa bracket to make the extra idler pulley