I don't understand why a 6'3" or even a 6'5" WR is a problem, even at 220 lbs. Try and stop a guy like that. From a couple sites:
Matt Jones 6'6" JAX
Plaxico Burress 6'5"NYG
Drew Bennett 6'5" TEN
Reggie Williams 6' 4"JAX
Marques Colston 6'4" NOS
Randy Moss 6'4" OAK
Keyshawn Johnson 6'4" CAR
Chris Henry 6'4" CIN
Calvin Johnson, Detroit Lions (6’3”, 225lbs)
Vincent Jackson, San Diego Chargers (6’5”, 230lbs)
Andre Johnson, Houston Texans (6’3”, 226lbs)
Steve Johnson, Buffalo Bills (6’2”, 210lbs)
Dez Bryant, Dallas Cowboys (6’2”, 218lbs)
Larry Fitzgerald, Arizona Cardinals (6’3”, 218lbs)
Plaxico Burress, New York Jets (6’5”, 232lbs)
Marques Colston, New Orleans Saints (6’4”, 225lbs)
Sidney Rice, Seattle Seahawks (6’4”, 202lbs)