How did I miss this...
Funny thing, the LT1-era v6 car fuel lines run from the driver's side shock tower...
These things are hanging in my car right now connected to nothing since the intake manifold is off...
Anyway, I read that to get them to work on an LT1 swap, all that needs to be done is unhook them from the clip holding them to the fender well and stretch them a smidge and connect to LT1 engine. Presto. Done with that part.
The 3.4L car AC system also is compatible with the LT1. Compressor swaps over no problem. You can use a v6 fan instead of the LT1 twin fans, which I have read to be rather finicky itself...v6 fan = 16", LT1 fans = 12" each.
Of course, what was a somewhat easy car to work on becomes a PITA in terms of working room with a v8 under the hood, but you only live once...