timing on commando 273 hp

say ! what are you guys all running for timing on the 273 commando engines.
My dartcharger 273 has all stock internals with dougs headers and ld4b intake.. I also have the pertronix III and flame thrower coil . oem carb , 2.5 exhaust .
distributor is curved 34* 18* initial.. with light springs
I tried 20*initial and 36*total >>>> the 273 was sluggish not as crisp. went back to 34* total and now frys the tires with lots of pull 3rd gear and up.
anyone ever try around 32* total? results? what are you guys all running
Thanks !
JOHN