A buddy of mine bought a Dart a little while back. It's a back halfed 69. It came without an engine but with a Offy Tunnel Ram and two Holley 660's Another buddy of ours had an old 78 Monico in the field at his place. The 440 had been rebuilt for propane shortly before the tranny went and the previous owner did not want to fix it. We took out the motor, checked a couple of bearings, did a spray can rebuild. We added a Mopar 509 cam and a set of box stock Eddy RPM Heads. I am not sure what the compression is but if I remember correctly the pistons are .250 in the hole. So far that car has run 11.05 at 119. I am convinced some of the power is coming from the tunnel ram!