3.2 litre 8 cylinder - 3-2-8 makes sense Mind you, only up to the 3-5-5; 3-60 and 4-30 I've never heard referred to as a 3-6-0/4-3-0
Everyone can call a 328 as he prefers as there is not a correct and wrong one. The official Italian name is "trecentoventotto" means "three hundred twenty eight". But almost everyone here in Italy calls it "tre e ventotto" that is " three and twenty eight" Ciao
In the UK: Two-Oh-Six Two-Four-Six Five-One-Two-BB Three-Oh-Eight-GT-Four Three-Oh-Eight Three-Two-Eight Three-Four-Eight Three-Five-Five Five-One-Two-TR Three-Sixty Four-Thirty Four-Five-Eight Four-Eight-Eight Two-Nine-Six