disc conversion then alignment no good

im running ultra 521 wheels from summit racing 15"x 4" with 195/65/15 tires

Wheel Diameter: 15 in.
Wheel Width (in): 4.000 in.
Wheel Material: Aluminum
Primary Wheel Color: Polished
Wheel Finish: Polished
Manufacturers Wheel Series: Summit Racing Fast-Five Series
Backspacing (in): 1.750 in.
Offset: -19.00mm
Wheel Construction: 1-piece
Beadlock Functional: No
Beadlock Included: No
Lug Nut Seat Style: Conical seat - 60 degree
Hub Centric: No
Center Bore Diameter (in): 3.375 in.
Center Bore Diameter (mm): 83.00mm
Center Cap Included: Yes
Load Rating (lbs): 1,600 lbs.
Valve Stems Included: No
Quantity: Sold individually.
Wheel Bolt Pattern: 5 x 4 1/2 in.