Brian;
Please; don't waste your time/money on any experiments of this type. I've "been there done that" (late 60s) trying to get better performance out of the 261 & 292 engines in Tow Trucks. All that changes is the noise and the welds/flanges almost always leak/break.
These systems (headers/pipes) help you keep the horespower you have (not add) with noise being a by product is all.
Think about what "baldy" said & remember 1 5 3 6 2 4. It's just that simple.
The V-8 data isn't relevant (apples-oranges) to this discussion/issue.
Martin in Sunnyvale, Ca.; just posted the "right way" to do it on Jan 4th here in 'engines' with pictures in & for ALL of us to see.... L@@k how the pipes (from headers) need to move (under body/chasis) separately??
Happy trails.
