Mine's still on the trailer due to work crap,the silver is off..some stonechip LHS,smashed LH headlight.
Went over to have a chat,he reckons the axle might be turning in the casing,he has 4 spare rearends so parts won't be an issue,he's going to look in a couple of weeks...the workshop is full.
Ok if you can without a lot of expense , see if he will swap diff ratios to the Aussie ratio rather then the short diff (US) ratio you have . Less acceleration but be reving a lot lot less in top gear .
......and another one at reputable's: https://www.lloydsonline.com.au/LotDetails.aspx?smode=0&aid=23105&lid=2881828&pgn=2&pgs=100
This 355’s in Glenhaven anyone know the car it’s been for sale on and off for a while https://www.carsales.com.au/cars/details/1997-ferrari-f355-berlinetta-manual/SSE-AD-7088325