whats my Horsepower gain with these mods?

Okay guys, so let me get this straight: The consensus/implication seems to be that adding a 2bbl and better exhaust to a slant six isn't worth the time and effort???? What hobby is this???

Nobody ever said that. You assumed it. Go look at what I wrote. I said WITHOUT exhaust mods, there was no point. Doing all the rest without improving the exhaust is indeed useless. That's why the Super SIx package had a 2.25" pipe. You should brush up on your comprehension and grammar skills. Not to mention your manners in your ugly little PMs talking about another member because you're too chickens%$t to tell him yourself. You're off my list, moron.