You can run an upgraded turbo on stock block, not an issue. However don't believe SOME of the things posted on the forums about pushing the stock block.I think if you're going to run a larger turbo, you had best make sure the internals are beefed up also.
Personally, I did bolt-ons and will probably put a turbo on the replaces the stock turbo.
I want 600 HP safely on the stock block!!!! haYou can run an upgraded turbo on stock block, not an issue. However don't believe SOME of the things posted on the forums about pushing the stock block.
Alright thanksThere will be direct bolt on turbos that will produce power levels to 500 in the very near future. I have already been pushing 53 lbs/per minute with the Cavalli and can produce more with what will be released next week, so if you purchase a down pipe and intercooler there will be a direct bolt on turbo that will mate to them and produce the power many are looking for.