The car cleaner you provided a link to looks to mount directly to the (Harley) cylinder heads, while the x-wedge version has link brackets for mounting. Perhaps you could contrive a suitable mounting arrangement. It does appear the throttle body mounting is the same. You do need solid mounting to the heads, as simply mounting by the three screws on the throttle body can cause put undue strain on the intake manifold gaskets creating leaks there.
