Firestone FIREHAWK INDY 500 My hellcat friend has them and loves them. He has traction now. They come 305 size that 9.5" work on. I would not put 305 on 9".
20x9 wheels with 275/40/20 20x10.5 wheels with 305/35/20's That was the original plan thanks to @quietpeen suggestion, but unfortunately the Atturo's don't carry that size. Maybe the Firestone ones do, I'll call tomorrow
Also side note, sorry.... Anyone got a rear diffuser they suggest? Cause I'm about to purchase this but I'm skeptical lol https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com/ulk/itm/192886411822
I saw on Amazon, it's over double it's original price now and idk, just seems steep for something that was $80 not that long ago