Welcome to Restoration-Mini!!
I'm not planning to remove ours, as long as everything works it's staying right where it is. I'm hopeful that since ours spent a lot of time in a dark garage, the sun hasn't hurt it too badly.What we could use are a couple of those cool silver eyeball vents on the end of the dash.
About the sumpguard, I thought the Inocenti ones were not solid like the one you took off but were made out of a series of strips of flat metal with gaps between the strips. Like flat bar.
Last night I removed those awful fog lights, they were only held on with a rubber bungee and a couple of screws, the rest were attached with a frameworks of bits of chopped up metal strap - pitiful. I also pulled the grill and the sump plate so I could have a look around underneath - subframe has plenty of British rustproofing on it! Looks like the side seals are definitely leaking. But, it also looks completely original, undamaged and of course - not rusty. Found a local place that will blast and powdercoat both for $100 total so once I drop and strip them they'll be off to the coater's. Sump plate has definitely been doing it's job...heavy little sucker too!Today I pulled the bonnet off for better access and more light and took off the air cleaners, I reached in and tried to lift the carb pistons but they were stuck tight! I took the domes off but the pistons were still held, so I carefully wedged them out. A quick blast of carb spray and they look like new. The filters are completely shot so we'll find some K&N's to fit, but surprise - it has some cool stubstacks on it!. I still would like to see if I can get it to run before I pull the engine out for cleanup and reseal but it may be I need to spend too much time cleaning fuel tanks and such for that to work, we'll see. I'm also going to have to cut off the gas caps as they just are not coming loose - found out we do have the correct keys for them too but we're going with some cool Monza style caps anyway, so no loss.Tomorrow I'll pop down and get a new battery for it, then we'll go from there.