Blow proof bells

I haven't had any experience with the quick time stuff but that open hole where the starter nose fits would keep me away from using them.They do have a smaller can area (area around the clutch) so that will keep the velocity of the escaping parts down but I can see a couple of pressure plate bolts escaping through the fork and starter opening...That means 1" holes in your fender...
I've personally had 2 clutch explosions and have seen 4 others.(all Lakewood) and every one drilled a hole in the inner fender and 3 drilled holes through both inner and driver side fender not to mention the header damage.And that's through that little clutch fork hole.
The old style Lakewood cans would pop most if not all the 3/8's bolts that hold the bottom of the can together that's why they went to the bigger 3/4 bolts.
A pressure plate explosion is a very nasty..ugly thing to have happen and a flywheel is the worst...it opens that can RIGHT UP breaks the belhousing to block bolts and peels that block saver back like paper after popping all the bolts that surround the bell housing.It does it's job and SLOWS the big pieces down so the headers and firewall and inner fenders can stop what escapes from the can.
My rule of thumb No two piece belhousings..No drilling on a pressure plate..No lightening flywheels and as few holes in the can as possible