I'm making more than what you want with no block problems so far. I'm not hitting it with Nitrous though. I had one tuner lean it out and cracked 6 pistons, but the block was o.k. I'm running a Probe 5/8" girdle, which I don't think they make one that thick anymore. Also ARP main and head studs.
The machine work has to be right on though. When I first took my block in it had some bad machining from a previous owner.
did think about that but turbo system i mostly off the car now.i just have to remove the intercooler,i have to pull my motor so i can transfer it in my new car.
but if some one offers me money i will take it