A 7' plow is way to small for a full size truck. You should definitely get a 7.5' plow for your truck. You could probably buy a good used 7.5' Boss and sell your 7' and come out about even or you could just buy a 7.5' blade for the plow you have now. I'm not positive but, I think if you put any Boss bigger than a Sport Duty you will need new push plates but the wirering should be the same.
2010 Volvo Wheeler D13 375hp 11' Plow & Wing Hopper Spreader - Maine DOT Truck
2010 Toyota Tundra 4.6L Double Cab 6.5' Bed 7.5' Fisher - Dad's Truck
2002 Chevrolet 1500 4.8L Reg. Cab 8' Bed 7.5' Fisher - My Truck
2004 Arctic Cat 500 4x4 60" Plow
1978 Allis-Chalmers 5050 50HP Tractor with Bucket Loader