Neither of those are scale chassis.
The SW2 is a comp chassis and the Junfac kits are more like stock upgraded kits.
For a nice scale chassis, Look at Reign Industrie K2-3L at
www.reignrc.com
Or the BB-51 chassis from Montana Scale Designs at
www.montanascaledesigns.com
And the MFM scale chassis from
www.thecrawlerstore.com is also popular for scale builds.