I've had a lot of folks asking the inevitable question.......How much??
Mine was $975, but Dave from Impros just informed me that Skat raised the price on the core and it will now be $1100. That's based on you sending them a good clean 650 pump and what you get back is the pump with the Mag core, new shaft, bearings, seals and prop of your choice. I also had the pump liner replaced while it was there and that's a couple more bux.
Dave also said he would work a deal on a multi-pump (at least 3) basis, so if you get some buddies together and send 3 at a time he said he could probably do it for $900 each.