I'm looking at the March or Vintage Air set ups for my '70 BB. Anyone have any experience with either of these?

I have the March standard rotation H2O pump serpentine set up. I like it, but I got it before the Vintage Air Front Runner came out. If I were to do it all over, I would go with the front runner, its pretty slick. With a front runner style set up you, don't have to worry about tolerance stacking and variances due to block decking, aftermarket heads, just to name a few. March makes a similar kit to the front runner, but I don't like the looks of it.

how about

http://www.conceptonepulleys.com

I have one of their kits just not installed yet...

will