stock push rods (or whatever you have in there now) might work but norm is .100 shorter but gaskets and decking as well as desired preload will determine whats correct for your engine.
with the added lift i'd suggest a good set of chromoly rods ,you can use your current rods to check as each turn of the adjuster is .050 ..so install the stock and adjust for preload on your combo and if lets say you need two turns down to reach perfect thread exposed on underside as per their specs then you need .100 short of stock,
but if you plan to run on totally stock heads you will need to cut the sides of the pedastils for clearance and you will need to check exhaust side that the retainer doesnt contact the guide and that the rods dont hit the sides of the head (you cant run 3/8" rods)