yeah the wastegate is the circular bell-like housing right near the alternator... yeah i think its right above it (its early morning my brains not working).....
if u look, the wastegate actuator has two vacuum lines (top and bottom). the bottom goes to the vsv and the top goes to the first turbo. ur suppose to remove the bottom one, then cap both sides. u 'T' the top vacuum.
i mounted mine right below the intake (i have cone filter) fabing a simple mount out of aluminum. theres a few free bolt holes u can mount on. i also have the intake box (watever its called yeah its early hehe) so the hallman is REALLY hidden.... i love it. i also like this location cuz it means the two vacuum line going to the mbc is really short.