Yea, in online I have a 10 car garage filled with Grotti's all based off of their real world Ferrari equivalent. Some of the better / more notable cars are:
Italio GTO (Ferrari 812 Superfast)
GT500 (Ferrari 250 GT SWB)
Turismo Classic (Ferrari F40)
Stinger (Ferrari 250 GTO)
Turismo R (LaFerrari)
Carbonizzare (Ferrari 458 Italia)

You can find a full list of all the Grotti cars (and when you click on them it will tell you what they are based off of) here [www.gtabase.com]

that's a fact that i didn't know

some Grotti cars are based off of Ferrari's so you can just buy em and mod em (at LS Customs) to look like the real version if you want

It's better to not add these mods if you play in rockstar servers, if you play in fivem servers only you will see the mod. to install mods you'll need openIV

We get banned for use mods in Online, so board.

i can't use it in online right?

buena guia torgaa :)