Well my F1A has a bent impeller fin and they quoted me $1300 for a new F1A impeller but if it's only $500 bucks for an F1C impeller then I'd rather do that.
It is $465 to upgrade. Here is the link http://www.procharger.com/pdf/appGuide.pdf But I think that's if your impeller is in good shape if is not I think you need them to replace the impeller for $1300 and then $465 to upgrade I don't know why they do that :shrug:. I guess more money. I need to replace my impeller on my F1A and they told me that it would be cheaper to buy a new head unit so I will never buy another Procharger.
I did a google search and I found this. Only question would the upgrade be on top of the $1300 or is it just $465. Hmmmm. It's either fix the F1A or buy a four post lift. Decisions, decisions....
PC015A-014 F-1A to F-1C Upgrade (currently owned, satin finish) $465 http://www.procharger.com/pdf/appGuide.pdf
Called PC today and it's only a volute switch for $465. I'll have to pay $1300 + inspection fee to get it fixed. I may just run my D1sc until I save up more dough for the fix/upgrade.