M-Tech Sport Suspension Coil Springs

[noahsense]

I'm having a heck of a time trying to confirm part numbers for M-Technic Coil Springs that would be appropriate for a 325is. These springs came fitted to the Euro market 325i Sport and were paired with Bilstein shocks.

I've come up with two sets of numbers including a US part # which is confusing because AFAIK, these springs were never (or perhaps rarely) optioned for US bound coupes.

Part numbers for US cars:
USA m-tech front - 31331130054
USA m-tech rear - 33539061134

And the LHD w/ AC Euro #:
Europe m-tech front - 31331130049
Europe m-tech rear - 33539061590

I'm searching if anyone has a set!