They will push 8-10# in stock configuration on a 4.6 (289) Smaller blower pulley and 14-16# is common place. Unported 115-118 mph trap speeds are normal, Ported add 5 mph.

Should make a 5.7 run pretty hard, if you can get the piston to live. You need EFI to feed it though.

-Dustin
67 Dart, 9 second, 392" G3 Hemi
68 Barracuda 340 F/SA