64-1 upgrade to 66-1

[David Davis]

Since I have gone to a FAST and no longer need my MAF, I want to step up to a 4" inlet on my Turbo. A brief conversation with Precision leads me to beleive I need to have the compressor housing upgrade to an "H" model which will make my 64-1 a 66-1. Has anyone else made this switch? Was it worth the expense? Any performance numbers?

 

[Cheeseburger]

That would be a compressor cover upgrade.........evereything else stays the same.
Is it worth it???Depends on the cost!