That was fun to watch (the triples drag racing).
There's a Canadian guy (Off Road) on the RZ350 forum actively bracket racing his mildly modified bike for 2 or 3 years. He's very analytical and makes little improvements along the way.
A bit of one post
On Saturday at 4:49:29 PM, I had my fastest run of the day. 12.849 @ 102.41 mph.
On Sunday at 4:49:22 PM, I had my fastest run of the day. 12.808 @ 102.49 mph.
Here is his thread. Not much in the way of videos but some may enjoy the read.
https://www.rzrd500.com/phpBB3/viewtopic.php?f=5&t=15733&start=300