I always had a soft spot for the Cadillac LMP cars, congrats on the purchase! I always thought it a shame Caddy didn't stick around for longer at the top ranks.
Speaking of the engine and intake arrangement I snapped this at Daytona in 2000. If I recall correctly this car was pushed into the garage at the very end of the race and they hurriedly tried to get it running before the finish, I can't recall if they did or not. I think not but that was a long time ago.
Full set here:
https://www.flickr.com/photos/wolfsb...57622315559150 (not many Caddy pics)