I have the UHMW intake and fins I don't always run them. Depends on what I'm doing. The UHMW intake is well made did slow me down some not a lot. I like the fins they haven't taken any good hits yet. I'll try and take pics of the fins and intake to show how they are. I do want to come up with a better way to mount the fins the threaded rod from james river jets is crap. I may have to call obj and get their rods and maybe make plate that disperses the clamping force of the nuts tightening down on the fins. What would be awesome is if rock proof made their intake with fins so it was one uhmw piece with fins. I like the fins cause I can run my motor a little higher out of harms way.