We just tore down a 600 HP, pump gas, small block stroker for inspection that has MRL Pro Plus needle rollers and a .430 lobe lift cam. It has been running on the street for two years. The cam and lifters are perfect.

As a side note, I should say that the lifters were flooding the cam with so much oil I blocked the oil pressure feed to the rollers and they have been running that way the whole time, with no oil pressure to the needles. They are reliable roller lifters.