Has anyone used this manifold?

I wondered if any of you have ever used this manifold on your slant and whether it was a good one for street driving. I don't plan to race, but I don't want a slouch either...

http://www.summitracing.com/parts/OFY-5270LK/

I have been using one for over 3 years, on the street on a stock 170/6 engine.
Wow the price has gone sky high on these great little Offey's :protest:
Hold out and wait on a deal on a used one :toothy9:
And Charrlie_S is right, on a stock system you will not feel allot of difference
But if you open the exhaust to a 2 1/4'' starting at the manifold with a good tune
it douse help MPG and give you more H.P.