Mild steel is fairly easy to man-handle and re shape. You should be able to straighten it if you take it off, though it wont be exactly as new, and you may have a bit of trouble aligning the bolt holes. You cant if you dont try, that is for sure.
Written-in on the engine sump page of my CarDisc for Series 1 Spider's/GTV's (AR808, Ver. 5.0) is a notation that says: "Sump Guard 10526.01.87.1.02". The 10526 is probably transposed from 10562?
Could have meant, if accurate, that Alfa either made or sold as a part, a sump guard. I know I picked mine up at a dealers' when I bought my car (in the deal).
Not trying to revive an old post but I remember seeing the question above and have definitive proof that the part number that is listed is correct as it is listed.
This sump guard came with a collection of parts from an estate sale and while putting one of the cars back together and planning on using this guard discovered the original label still on it and in tack. See below.
I just removed mine after scraping it on almost every bump I took. My GTV sits really low already and the sump guard was just too close to the ground. After several collisions with the pavement I had it removed and surprisingly it's still in perfect shape other than a few scrapes. I paid 150 for it. Now it sits in my garage.
Back when I posted in 2008, I removed it to reshape a bent tang. I never put it back on and have yet to scrape the oil pan. My guess is that the guard sits so low that it hits the ground occasionally, but that every time the guard hits, it doesn't necessarily mean the engine would have hit.
I think you have to account for the way the car is sprung also. On my lowered GTV I've got fairly stiff springs and Konis set to medium. I have yet to hit the sump and the streets around here are really bad. OTOH, I had a stock '73 GTV - a good couple inches taller and busted the sump on the same roads....