My v5 2824 clone spec, with the following gen parts all sourced from Cousins UK:
Gen dial
Gen date wheel
Gen hands
Gen HE Valve (non-functioning)
Gen bezel and insert
Gen end links
Sunnydale Crystal
Haven't got round to the crown and tube yet. Got the parts, but to be honest the rep crown isn't a big tell compared to things like the bezel, pearl and HE valve (the rep version is way too tall). I would also say the gen end links are a bit of an indulgence.
The main advantage of the LM case is the HE valve, much more gen-like, replacing the rep version is a bit of a job.