Since my last post on August 8 I've put about 6-700 miles on my 4.2 Healey conversion. 400 mile trip to Stowe Vt for British Invasion car show averaged 30 MPG with 32 for one tankful. With stock PCM and all contols (Cam) it pulls like a tractor at any speed. I have a 6 spd trans but it would be just as quick with a 3 spd with all that torque. I have to put some upper torque arms on the rear axle this winter and then I'll put some bigger tires on it. It got a lot of whatzat questions from people trying to aguess what the motor was. All in all I'm extremely happy with the conversion