The only DSMs that have problems seem to be 2Gs. Breaking rods and crank walk. Get a 1G obviously.
James had an easy 400(at least 50 of them 12s) passes on his car when it broke. He AutoXd it every weekend for a year BEFORE dragracing it. It didnt really break...the clutch let loost due to a faulty ACT disc. We dont use those anymore.

I have seriously never seen a DSM break beacuse of something OTHER than user error.
Me....too lean. Not much experience/knowledge tunning.
Joe...launching like he wanted to goto the moon. He still drove it home with the driveshaft in back seat.
James....ACT clutch disc POS. Went to the infamous race rebuild...never to run again grave.
FWDs...axles and diffs....bleh WWD.
Period. Thats it.