I had 440 source rockers on my 512, a few 1/4 passes & 5k hard street miles, 155 seat,390lb, held up great, but I changed them anyhow, went with T&D, the source rockers dont oil the roller tip, they only get oil splash, others & I know T&D has an oil hole to lube the roller tip & cool the valve springs. I also used the B3 racing correction spacers with the T&D's got the rockers from Dwayne Porter, so far so good .

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