Thanks, that's what I'll do, just thought someone here would have the info, but that's OK, will contact Parabellum on Monday...
December 17 Update:
...Parabellum replied that that specific system is predrilled, and is the two piece system. First piece bolts to the original cowl using original holes, second piece bolts to that and is adjustable to change air flow for noise, etc.
Thanks all for your responses...