I have an electrex world reg/Rec on my 350, but only because the original equipment started to fail, i know this as i monitor the outputs, but i have noticed there is better charging at lower engine speeds, on the other hand i had 3 Reg/recs from M&P that were not even as good as the original equipment before i got my money back and paid a premium to electrex world, so there is some weight to this but only if you buy premium quality parts.