All you need is the modified front offside engine mount, carquip, Just novas, etc, etc. And the gearbox spacers to go with it.
A set of driveshafts, either custom, or use a set of Nova GTE shafts with Mk2 Cav 1.6, or Astra Mk2 1.6 inner CVs.
Modify the exhaust manifold to mate up with the nova one, use the accelerator cable from the donor engine.
Everything else is the std nova stuff.
You'll need to modify the inner chassis rail (offside) to give the alternator enough room. Otherwise it'll keep grinding against the chassis.
You will want to lower the tie-rod brackets too probably.