Pushrod length in stroker

You should always check. Since your using non-adjustable rockers, you defiantly need to check. Comp shouldn't say what push rods fit your combination since the block may have been decked, the heads may have been decked, your rocker pedestals may be in a slightly different location than the old heads, head gasket thickness, Valve tip location, actual rocker ratio and cup location, base circle of the cam, lifter cup location, etc.