3.8 turbo engine question

[blown sn-95]

what pistons came in the 3.8 turbo motor from the factory cast or forged?

 

[Nick Micale]

Cast.

 

[blown sn-95]

how much boost can a stock motor handle properly tunned?

 

[BLACK6PACK]

I've seen guys run 30+ psi on the stock motor for several years. Just make sure you have the fuel.

 

[blown sn-95]

I know where there is a 4.1 complete from buick motor sports. it has cast pistons, do they need to be changed or can i drop the motor in and go? what is a good price for a complete 4.1 new never run?