The LT1 had the internals all freshened and a ZZ4 cam installed when the motor was originally swapped in 2001. This time is an external freshening up and mounting A/C compressor and alternator.
Do I wish it was a LS motor - OH YEAH! But for this car staying with the LT1 was part of the staying "On Target" and not letting my wants override where I should be.
Besides this thing has run quicker at the track than some LS powered cars. Plus a couple of Foose built Riddler cars used a LT1/LT4 - the Grand Master and Stallion. (Just trying to talk myself into being content. Do I still want a LS set up, yep.)
Anyway, staying On Target for your build may be a LS7, DSE/Roadster Shop chassis etc. Whatever it is, don't settle for less. Just keep us posted on Lateral-G !