I've seen many NHRA SB Mopar stockers push the pushrods through the stock stamp steel rocker arms at the races, both OEM and the mopar H.D. stamp steel rockers That was before NHRA allowed adjustable rocker ars, no NHRA Mopar stocker racers use stock rocker arms now
Use the adjustable 273 rockers now with the proper length pushrods for your lifters instead of later after breaking three or four stock type rocker arms
Do it right once now instead of fixing it later