Looks like a real nice unit to me. Easy to see, being very large. And as for drilling holes to mount - they will be so small that strength will not be affected, and it shouldn't void the warranty. Even if it does, it will only affect the warranty on the pin box, not the whole trailer. You could always check with the pin box manufacturer to verify one way or the other. JMHO
2003 Ford F-350 V-10 Crew Cab 4WD Long Bed
2004 Jayco Designer Medallion 29 RLTS 5th wheel
Bill, Gayle, and Mindi (dachshund)
Retired at last !
Nothing is foolproof to a sufficiently talented fool.