KB Pistons
my 69 barracuda had been running KB191 hyper pistons for 5 yrs...
best et is 10.77...so dont sell the hyper pistons short...
they are a very good piston for bracket racing...
there are alot of 360 running KB107 pistons... my 73 duster has them...i am installing another set in a 360 that will probably run mid 11 in vegas.
just following the instructions....tigher clearance...and make sure you gap the top ring correctly..