I've searched here for threads on this and no luck. I've searched parts diagrams, but find only the entire boot. My car came without a top boot, so I ordered one in leather. It came in with no fasteners for attaching it. Of course the maker is like "Sure hate your luck." I need fasteners to attach my top boot to my car. Any idea of a source? The Googles are failing me. I find entire boots (*scary* prices), top lockdown levers, convertible tops, but never a set of top boot fasteners.
Not sure if the 348 ones are the same as the F355s, but ... https://eagleday.stores.yahoo.net/tenaxfasteners1.html They are the "Made in Germany" ones.
...but come in different sizes, so make sure they match up. You may have to buy the installation tool.
I've come across threads where it's stated that the only difference between the 348 and 355 boots is the split for the center-mounted seatbelts on the 348. I hope that extrapolates to the fasteners!
If all you need are the Tenax fasteners that pop over the posts, then they are all the same. Although the ones you buy off the market will not have the ferrari horsey on it. No one will ever know... shh.
