No not a stock exhaust maniflod at all, I fabbed up a dual lakes style header, so plenty of flow there. As for cost I'm in Canada so basicly 30% more for parts because of shipping and brokerage but I'm into it for about $3000 so far including the machining bill, and cost of the block. The bolt bosses are still in, from other posts I read, including Leo Stantucci's book, for street rod its better to leave em in unless you are going to the lumps. I Shaped them like wings as best I could to improve flow but read that any increase in volume is lost by the decrease in air flow if you just take them out. Once I get it painted I'll post pics.
So 210-220 With the headers, thats not bad, the 4:11 gears will probably scare the average 350 for the first 3-4 blocks anyways
