Very good points skunkworks!
The VX in it's present format is not green by any measure. The LS1 (LT1) is clean burning engine as a result of GMC corporate policies from years back. As a result of the conversions I would expect better fuel economy and lover tailpipe emissions. Will it pass red tape regs? I don’t know but I would hate to see all the conversion affords to go to waste bexose some shortsighted government regulation.
In my area (temp. Edmonton Canada) unfortunately no regs at all.
I thing that the challenge is to convert with respect to all DOT, EPA and other applicable agencies. Conduct "bolt on" practices as much as possible and allow for possibility to revert the conversion (thus no cutting torch allowed!).
I hope our respectable friends realize that extends of this project if executed properly, is no less than 12mo for tree shade mechanic like myself. However It would be a noticeable contribution to our micro community to produce a LS(T)1 conversion kit.

VX922
PS: I love those project challenges