[Unique427]

Congratulations on your purchase.

Based on the usual 12" x 8" oval pattern,
it's sufficient if the filter is at least 2-1/2" tall.

For a 2-1/2" tall oval described above, the power penalty is
about 2HP from that engine at 4000 RPM and 5HP at redline.

770CFM carb seems kind of small for a 545 but I'm sure
it's fine for street and if you're not going to hammer the throttle
past 5000 RPM. Someone smarter then me will come along to advise.