I tried supercharging (SC14)my 4k, but on a pressurized box set-up. It was a DIY project. At first I tried doing the blow through approach but it was a failure. Everytime the SC was running, fuel inside the stock carby would be leaking out due to the air pressure.
Since it was a failure, i did the pressurized box set-up and installed a BOV. It worked perfectly.
You guys can view my video on youtube. Its the "Supercharged 4k on Rn10"