Has anyone installed a V12 in thier E24 635csi/a ?

Wouldn't it be a lot easier to buy an 850?

cant say i have..... :rolleyes

I think more have tried putting the NSX engine in the civic...

Check out this link, especilaay the yellow one. http://groups.msn.com/minabmw/shoebox.msnw?page=1
To an old hot rodder, it doesn't look too hard (and I did think about it).

looks like it can be done.i've done some 6 cyl to V8 swaps in my day on some old detroit iron.before ECU's.