Exhaust nuts and bolts can be easy or hard,
it just depends, I would recommend replacing
the bolts in the head with studs, aluminum
will strip easily when bolts are taken in and out
too much, so save yourself a future headache,
also replace all the nuts and washers with Stainless
Steel metric thread ones, they don't rust and
get stuck like regular ones do.
Use the 1.6 Exhaust Manifold if you have it, better
yet get a header from Hawks or Calmini if you have
the $$
That could wait too, I don't know how well the 1.3 manifold
flows, but you allready have the exhaust out the back so
that might be a better for now if you don't have the funds to
do a new exhaust system too.