2 340 questions

It is not that big a deal to put a roller in a SB Chrysler. The only thing that must be done is to restrict the oil to the lifters because some roller lifters will uncover the oil holes in the lifter bores. Two ways of doing this. 1 use the Mopar oil restriction kit which involves installing a tube in the passenger side oil passage that feeds the lifters and a few other mods or 2 have the lifter bores bushed which is more expensive. Also should run a bronze distributer gear. It is hard to tell what you have for heads without numbers.