Originally Posted by Epstein

I'll assume that you're talking about the S13 subframe. It's bumpsteer and antisquat aren't that great compared to the S14 version.

S13 subframe
-flange to flange width: rear track is 1460mm, and that's with +40 offset wheels, so you're looking at 1540mm. That's at ride height, neglecting a few mm for camber.
-distance between the forward mounting points is 1070mm on the bolt hole centers.
-distance between the hub center and the forward points along the centerline is 425mm.
-bonus: the distance between the rear mounting points is 606mm.
-bonus: the proper height difference between the front and rear mounting points is 149.5mm.

Most of these figures are directly from the BF (body) section of the FSM. The rear track and wheelbase are found in the GI (general) section.

The S14 subframe is a direct derivative of this as far as the mounting points and hub locations go. Just add 10mm to the total widths (mounting points, hubs). The heights and f/r distances stay the same.