Check out what mounts up on 1/2 trucks for snowplows today (7 1/2 foot 'light duty-homeowner' plows).
The manufacturers will tell you all about the lighter front ends, springs and brakes.
The Toyota tows 7100# & has a GCWR of 13,600#
The SD is 11,400# & 18,000#
Its not what you have, it's how...