Here is a pic of my 67 chevy II. It runs a 406 stroker, 10.5:1 cr, .545 lift, 284d cam, edelbrock TR1X tunnel ram, twin 650 Holleys, Edelbrock alum. heads...turbo 350 w/3000 stall converter, 4:11 posi rear ( soon to be mini tubbed w/a 9") Heidts superride II front suspension, Chromoly 6 pt roll bar, w/out riggers, frame connectors and South side Machine Lift bar set up (soon to be Caltracs) prior to the tunnel ram, the car ran mid to high 11's someday when the wallet allows, it'll go faster. But it's fun right now on the street.
It slowed the car down some. Well, It really just changed where the power comes on. It really pulls great from 4000 rpm +.........Took away of the bottom end. But it is only temporary. Just threw it on there for looks..