Anyway, you’ll be glad to know the bods at Japspeed are now stocking this trick little mod for any Mk.1, 2 or 2.5.
A bargain at just 129-quid delivered, this twin loop bar is mandrel bent from thick walled T304 grade stainless steel.
And it’s not just easy to fit (simply bolts to the existing seatbelt mounting points) but it should give you a noticeable improvement in rigidity too. In an MX-5 that’s never a bad thing!
For more info see Japspeed