No problems it will be interesting to see,the 6466 is a new design with both wheels having new designs,apparently that will help with boost it will be hard to compare to factory as the glide makes a difference! I'm using a 6boost manifold and precision 66 gate Chees lee Hi stee3 I've gone the biggest available 1.32 as I'm not concerned with lag,I just want the most power it can possibly make and like you said running e85 will make full use of it! I've heard nothing but good things about the 7675 so I'm sure you wouldn't be disappointed if you went with it when your done with the 42. Lee Hi pro346 Yes ive got a 6boost manifold and a precision 66 gate. I got the turbo package through dragonslair motorsports Cheers lee