The weak point on these engines is the cylinder head. The rotating assembly is nearly bulletproof.
I have fitted 4 of the 12mm pumps to d24t's.
1)Rebuilt d24 plus T with ARP studs running 20/25lbs on stock turbo.
2)Rebuilt d24t with AMC cylinder head that has been ported, ARP studs, turbonetics super 60 T3 turbo, large intercooler. 30/35 lbs of boost.
3) low mile stock d24t with ARP studs, small intercooler and a stock turbo with a T4 compressor.
4) 289,000 mile D24T completely factory with GTD nozzles and running 20 lbs boost.
I built the engines on #1&2, factory rods and crank, KS Pistons.
The stock turbo leaves lots to be desired with the 12mm pump.
#2 is a hoot to drive, hit the throttle in second gear and will throw you back into the seat pretty hard. It now needs a turbo upgrade..
A T3/ T4E 50 trim would be a good match.
Do some port work on the cylinder head, get studs! Flat cylinder head and deck on block.
You can fit the 12mm on a stock engine, there is enough adjustment to get the fuel turned down to keep the factory turbo alive.
Let the race begin for a high HP D24T!
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