Hi William
Yes there was enough room to drill and tap for all of the new holes.
If you look at my pic's on page 8 of the rear deek after fitting,you will see from the front
it just overlaps the front deck screws just enough to cover the little gap and be nice
and flush at the back.
You will notice the 2 inner hex head screws have there flats facing the base ring,
and I rounded the bottom of the base ring a bit,which looks better anyway and there is
about 1mm clearance with those 2 screws,the others are no problem.
I did the 2 front outer edge screws first after marking for them,then the 2 outer back ones,
taking the deck off each time to see where I was drilling.
I wanted it nice and flush at the back of the rear deck lid so I could fit the hinge type latch
that you can see on the board in the previouse picture,I have fitted them now and they work
fine after a fiddle about
Cheers
Phil