I would not use a needle bearing roller lifter for the street. it would be just a matter of time before it fails and sends tool steel shavings throughout your motor. I only use bushed lifters....

68 cuda formula S 588" bb 5sp
70 CUDA CONVERT 500" 5SP (SUBLIME)
70 CUDA CONVERT 500" 5SP (PLUMCRAZY):TOO MUCH HORSEPOWER, IS ALMOST ENOUGH!