Does anyone have something like a scan of an RB5 chassis bottom, or even a chassis drawn in cad? (I'd understand if no one wants to share the latter.

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I'm just about ready to start/attempt making my own mid motor chassis. It would just save me from bringing a chassis to work to scan for myself.
Thanks!
*EDIT* I'm looking for a stock chassis scan/drawing for measuring purposes only... not for an already designed mid motor design. *EDIT*