those are OE springs & if your rebuilt dist has the same ones be sure to toss the heavy one & sub in a mr gasket or MP light spring in place of it. On the P install do Scratchns tips: leave the green tape/dont leave ign on/cap with brass terminals/no solid core plug wires. You are using the flamethrower coil? You might weld up the slots then work with them after you finalize the initial. bottom line do NOT allow any pinging