It's also best if you add an extra fan on the back of the case to have a better flow. You can add the fan's cables to 12v from the mobo, but gotta change the SPDT switch to DPDT on the switchboard.
Still need these? PM me with your offer. I have a VA0 JP Dreamcast which I just bricked from screwing the wrong sized screw in the GD rom area, which killed the video out on the motherboard. Mine has the heatpipes and fans.
OP: You will need the casing of the heatpipes dreamcast too as it's what hold the heatpipes in place...