Ah, time to break out the "English-Scots" dictionary then, and yes you do have to pay special attention to Glaswegian vs Edinbroughez, you'll know you have the right one if it contains a reference to the ancient and time honoured Scots marshall art of " fa-que"
as to the correct pronounciation of "Guzzi" it is as stated, and as told to me by a very serious Italian gentleman in his 80's who was admiring the sound of my Tenni told me that..."Ahhh, THATS'a motorcycle, ....ahh thats'a sound .....magnifico"
"Goo-tze"...best said all rapped up in your best Italian accent, right shoulder slightly hunched, your right index and pointer fingers against your thumb with a slight up-down motion while saying ...
"Moe-toe Goo-tze"
Cheers
Van