Do you have a lightweight flywheel?
I'm not sure if all LW flywheels rattle. But mines pretty bad. That video isn't really against owning one, you need to be in one I think.
Have you been in a T56 supra at all? Be good to try. I can't hear that noise on videos, I can hear mine on video's, so it's really not something that bothers me.
My old stage 3 single plate clutch for lower power didn't sound rough, as soon as I've got a heavy duty clutch it sounds rough.
Yeah you can upgrade it, but you can't launch it without risk. You can hammer and drag race a T56 all day long. 600hp granny shifting gets boring. What happens when my built R154 blows up? Buy another? Money's down the drain then. I drive my current one fairly sensible, because I can't risk throwing cash away. Those grannas boxes come with a friggin warranty!
T56 kits come with clutches, everything you need. I'm best selling the R154, covering some of the T56 cost as well as op. GR700 was around £7500 18 months ago when I had a quote, shipped. Just import tax on that.
Or £6500+ for a v160, with no clutch, one careful owner (lolz). Or my 35 year old R154 lol.. that I can't launch or shift hard because I don't want to pop it. Options ant great!
Joel previously said to me, the GR700 will be fine for 1000hp and a bit of hobby drag racing on the odd occasion. I have to ask myself, can I afford for it to go wrong, not can I afford to upgrade.