yes. We cracked a stock 99.5mm sleeve awhile back on much less power and I'm still unconvinced that going to 100mm = instant broken case. Really it was just that we were making so much power and boost on a mostly stock block.
Let me add up the number of laps this thing did:
~10 laps at SLB set to 32psi
~8 lap test day at speedventures with 25psi
38 psi tune for the GTX35R
two dyno pulls and two drag passes at modified shootout at 38psi
3 auto-x laps at modified shootout @30psi
5 hot laps at modified shootout @35psi
3 hot laps at GTA @35 psi
so about 30 laps total and only about 20 at over 30psi.
The previous motor, which was nearly identical, lasted a lot longer but never ran an event over 650whp.