I run the re-pop MOPAR stick on my B stroker. With minor tweaking it fits between the header flange and head pipe. I tried the flex Milodon stick and the oil was wiped off by the bends. I tried the Mancini stick for use with headers and it fit fine on the engine stand but didn't play nice with PS in the engine compartment. The re-pop stick worked best. Minor PITA to pull it when pulling headers but no biggie.