LSA advice please?

[C6Z06]

Hello everyone. This is my first post but I've been reading and learning from all of your posts for some time now. Now that I'm actually starting the build of my first serious pro touring car I would like some advice if you are willing to give it.
The car is a 69 Camaro that I have had since 1986. The 383 stroker motor is going to be replaced by a brand new LSA crate motor with factory ECU. I want to have the LSA upgraded with modified heads, supercharger inlet porting, cam, heat exchanger update and tune.
I've seen tuners have already been breathing on CTS Vs and even the new ZL1s producing amazing results with those mods.
How safe do you think it is to do all those mods without upgrading the rotating assembly? Do you think the powdered metallurgy rods and cast pistons will hold up to weekend cruising and occassional track duty or should I buck up to upgrade them too?
The rest of the drive train will include a T56 Magnum and Ford 9 inch rear end.
Thanks
Lou