There is a local guy here in the area where I live, who has a '69 Dart street/strip car with a 340 based 416 c.i. STROKER small block. He is using a Procharger on his car (not sure which model he has), but he has water injection as well.
Just his blower setup ran about $8-9k I heard once...and his car is running 9.80's in the quarter mile...FWIW.