I believe the first OD trans in Mopar RWD was in the '88 model trucks, so they should not be too scarce. I pretty sure the early ones didn't have computer controls, so it shouldn't be too difficult to get them to work in an E body. There were no big blocks then, but you should be able to get an adapter for these. I believe OD & low gears (3.91 to 4.56 ect) gives you the best of both worlds, IE; low gear for get away, & high gear for roadrunning. I concede that the new vehicles have some advantages in options & creature comforts, but muscle cars were available w/ Ac, PS, PB, Cruise, tilt, PW, stereos etc, so they really aren't too hard to live with. Fact is, most of them ride BETTER than the new lighter cars, & the handling was pretty good too, especiall if fitted w/ a good set of radials. Also as mentioned already, there is something neat about having a car that isn't just like a few million others, & has style & personality. I guess I could buy just about anything I might want, & what I prefer is an old MOPAR!!!!! As for economy, w/ OD, most of the old muscle cars would be quite acceptable, as the main reason for poor mpg on most was low gearing. 4.10 gears were not uncommon, & there were no 5 spds, or auto OD. In fact, I have owned several big block Mopars that got 19 or 20 mpg on a trip, & that includes a 4500 lb Chrysler w/ 383 4bl, & a '70 Cuda w/ 383HP, man trans & 3.23 gears. Either would have done even better w/ OD. It is still a fact that a really efficient engine can make more HP & better MPG if driven properly. I too would like to see the facts on any streetable 4 cyl that outruns a 383, even if the 383 is a 2bl at. Ovmf