Stopped by a local boneyard today and found a '94 with the aluminum, diecast, front A-arms with the bolt-on ball joint. There was also a '93 there with the one-piece, steel A-arms.

I've read that the two A-arm styles are not interchangeable, but seeing the mixture there at the boneyard, I'm wondering if that is really the case.

Can early cars which originally had aluminium A-arms be retrofitted with the steel units (the '93 in the boneyard had).

And, conversely, can later cars, which were originally fit with the one-piece, steel units, be retrofit with the aluminium unts.

I know that this sounds silly, but I like the aluminium pieces better than the steel ones (purely for esthetic reasons) and would like to fit them on my '96.

Also, drove all over the Chicagoland area today looking for 850s in boneyards. Only found two cars in three the yards I visited. Is anyone out there familiar with boneyards in the Chicago/Milwaukee area that my have a number of 850s?