need advice on what cam , springs and things to get for my 340

Voodoo Hydraulic Flat Tappet Cam

10200702

Hydraulic Flat Tappet. Mid level performance street cam with excellent drivability. Works well with stock type exhaust manifolds and dual plane intake with mild 4 bbl carb. Great 4X4 and performance marine cam where dry exhaust is used. Improved valve springs and roller rockers recommended.; Advertised Duration (Int/Exh): 262/268; Duration @ .050 (Int/Exh): 220/226; Gross Valve Lift (Int/Exh): .475/.494; LSA/ICL: 112/108; Valve Lash (Int/Exh): Hyd/Hyd; RPM Range: 1400-5800; Includes: Cam Only

Voodoo Hydraulic Flat Tappet Cam - Chrysler 273-360 262/268
I fail to see how this cam will work with his roller lifters. Kim