I have since bought a set of T&D's for mine, but out of all the valve train parts that failed on my engine the 440 source rockers still look like new after 4300 HARD miles, oh well they are in the trash now. valve springs 155 seat,390 open

1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5