[ByronRACE]

Those are Blue Thunder cast aluminum parts. Nice parts, but if you buy them...ask for extra fasteners; if you ever lose one you'll play hell finding another.

The blower drive was optimized pretty well for a cobra. If I did it all again, I'd design it for a 4" idler so I could use low-cost off-the-shelf idler parts. Designing it for a 3" idler created all kinds of hell; including having to use expensive class 7 bearings and a custom idler. The electric water pump was necessary, but they are very reliable these days; it shouldn't be an issue. I'm using a remote-mount meziere. In addition to chopping belt length, It also improves flow not having to feed the air through a sharp bend at the blower inlet. Mine feeds from a nose-mounted scoop.