You mean the 1968 Manual trans 340 cam, if so yeah it was a good cam. Back in the late 70's Street Freaks which was own by Car Craft, built a low compression 360 with a 6 pack with good old Freon A/C, stuck it in to a 60's Cuda with 2.94 gears and went from LA to NY and got 16 mpg--they didn;t drive 55 mph either, lol
But I don't think that cam is no longer made?