It's not as easy as an MGB. On the front, you unbolt the bumpers, cut off the posts and then I had my body guy fab up brackets which he installed properly as he filled in the air holes on the lower valance. The "signal" holes were also opened up when British Leyland adapted for the rubber bumper - I had the hole closed and beehives put in though I understand you can make the signals fit. An old grille bolts right in but I did replace the 1500 front springs with 1275 springs.
The back on mine had been lightly rear ended so it was an easy choice to replace the valance and the "bumps" under the tailights - these were removed to fit the Rubber bumper. I had the rear spring de-arched an inch as well.
I'm pleased with the results but it is not an easy swap. Here are a couple of pictures to give you an idea