Debating on buying headers with standard vs merge collectors for my B-block, 500" B1MC headed wedge Daytona clone for Bonneville 2017. I'm looking for max hp for a few minutes at a time to make 240+ mph on the salt, so every little bit is needed. I know it is hazardous on a stock block...got it...but that is what I'm doing. Don't want to spend the extra $$ on merge collectors if normal (probably TTI) collectors will do the deed.
Also, will crankcase evacuators pull any vacuum at say 7000+? Thanks and Merry Christmas!