Offered up the gearbox, packed up level with some scraps & all slid into place and just needed gentle tightening on the bolts to pull it home, 7 bolts in total + thread lock, carefully checking the depth of each tapped hole before tightening (someplace I saw a blog where someone tightened bolts and pushed out the casting inside the engine)
Offered up:
Fully torqued (save 2x bottom bolts):
I can't get to the bottom two bolts with it sitting on the deck - the bell housing is preventing a socket getting hold so will wait until later before installing them.