Alright guys,
I may be wrong on this, but isn't a scattershield the blanket that wraps around a trans in case of a catastrophy like this, and a blowproof bell is like the lakewood piece. They both have the same purpose. Other than that, BUY THE Blowproof bell, and walk away. Power always exploits the weakest link, and when you throw some sticky tires on a car, those hairline cracks in a flywheel, can be the end of your legs.
Never heard of any kind of blanket? As long as i've been around cars, a scatter shield is the plate that covers the open end of the bell housing before it bolts to the engine (uh, like the pic i posted up above).
These even came stock on a lot of cars, but were more for blocking foreign objects from flying up from the road into your clutch/flywheel, which is also something that could cause it to fly apart.