Dunno if it'll be useful at all since the stats are usually in flux. I'm constantly tweaking stat floors and ceilings between builds even by just a little.
And even if you did have the base stats, they probably wouldn't reflect perfectly on the build unless you're able to maintain an exact 5000 weight. Generally, mobility parts are just rated for X effectiveness at a baseline weight (5000, in this case). Anything above and below that will adjust the final stats proportionally. Other stats may use only the weight of certain parts to derive their value, like Torso Twist Speed using Arms + Hand weapons + Shoulder weapons weights.
That's isn't true for some parts though. Sensors and Targeting are pretty straightforward and usually just display their raw stats regardless of unit weight.