Looking through the drawings it doesn't look like they are all that far off. I'm not sure what that security shroud is, but it seems to me in addition to the newer latch you might just needs parts 4, 5, 7, and maybe part 33 "Edge Protector"? I'm not sure what that's for.
It's unclear to me what the security shroud is or where it goes. Does the latch sit in it inside the door? If its just extra security and not structural or necessary for mounting it could be omitted.
Are there photos of the inside of a late 2012 door anywhere?
Is Bell & Colvill an ok place to order parts from? I'll try Gator and other recommendations as well.
The security shroud sits around the latch so that it makes it harder to slim jim the rods. The non-Inteva latches have them too, just bigger.
Bell & Colvill is one of the larger Lotus dealers in the UK, and I've ordered tons of stuff from them. Sometimes it takes a while to get over here, but I've never had issues not getting something. As an FYI though, apparently Lotus won't warranty any parts in the US bought out of the US, so you'd have to work with B&C/DeRoure for any issues w/ those parts.
Oh, probably not important, but I haven't seen anyone describe this failure mode yet: My switch seems to still partially work. When I close the door the dash flickers showing the door closed, then it shows it open again.
That definitely sounds like the microswitch acting up.
One concern is swapping the strike plate - if you unbolt the strike plate from the door, does the backing plate just fall down inside the car? Is there a way to get access to the other side of the plate?
You should be able to access the strike plates from the rear fuse panel access hole on the LHS, and if you remove the b-pillar panel and subwoofer on the RHS.
Can you elaborate on these two steps? I've been using a trim removal tool on the air duct fittings and I feel like I'm breaking something. Do they just pull out? They don't seem to have a release mechanism.
What is the door handle drop piece, and how do you remove it?
To remove the air duct trim, you pull the 2 plastic fir tree fasteners. There might also be a few smaller screws in the rubber grommet area.
To remove the door handle, you have to pry the front cover off. Underneath are 2x 6mm bolts.