Somewhere somehow, I've seen a package model like, here's lead inductance and resistance (probably resistance measured at frequency, not a general model thereof), and all the coupling factors between them, fairly round, but still.
...Oh, I think I found it! It's bits of I guess "include" data, not a SUBCKT proper, in TI's HSPICE models -- plain text. Looks like the section could easily be "packaged" as a .SUBCKT. For example, find scaj006.zip. The *.pkg seem to be of this format. (Don't worry about the *.inc, unless you want to try and decrypt it. Which, FREELIB looks disturbingly easy to crack, it seems to be a permutation space initialized every line or few; but that still leaves a lot of degrees of freedom between columns.)
Tim