408 stroker build ??

I have a 72 scamp street car, 3300lbs. Did a 360 magnum to 408 stroker with 10 1/2 to 1 and unported eddy rpm heads. Its a hydraulic roller with roller rockers and 750 cfm quick fuel carb. With 391 gears and a 3000 stall converter the car runs consistent 11.70's on pump gas with no ping at all on premium pump fuel and ran 11.10 the one time I tried my 125 shot of nitrous. Still very drive able too.