i've not had a play on a 4 stroker yet, even tho i almost got my hands on Deans Acrowot ( could have killed two test birds in one stone then ) but while i'm used to my spool up time of my two strokers, i'll remain in cheap fuel land

must get a mini for the poor 36 in my Cougar, it's on a Leo muffler, getting a half decent 13.9k, but it should be more like 16.
heres a weird one for you...
APC 10x4 13.6k
Master 11x4 13.6k but cuts when going from mid to full throttle!
APC 11x3 probably about 13k, more load than the Master, but doesnt cut.. weird..
when i've got the pipe Choppy recommends... 11x4 APC!

ps, new 36 design has a backplate that bolts right onto the Cougar firewall.