Need some quick Milano/75 tensioner help

[Bryan Carter <rosso75@domain.elided>]

  I'm selling my Verde and have someone hot for it but I have to get
the T'belt, tensioner and H2O pump done.  It's all in pieces right now
and it needs to be done by monday (Alfa gods be willing).  I'm a little
confused though and in need of some advice.   I got the old tensioner
off but before I start drilling anything for the new mechanical
tensioner I want to make sure I'm pointing my power tools in the right
direction.  
  The new tensioner obviously bolts to the block on the bottom using
the same bolt/location as the original tensioner, but what about the
top one?  I've looked at a few sites for info but all I've found is
comment on tapping the supply hole and plugging it rather than drilling
out for a larger plug.  I've found no mention of where the top of the
tensioner bolts to and my assumption is that I need to drill and tap
the oil return hole and bolt it there, but like I said I want to make
sure before I start drilling stuff.  Any sites or advice is welcome.
Thanks
Bryan Carter
No. Va. 
(please send a copy of any reply to Milanogold@aol.  I won't have
access to my e'mail for a couple days.) 
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