LO23s. not many done. i know in 68 they had the HEMI with a dual quad setup with 4 speeds and a dana. plexiglass rear window. no radio. no carpet. aluminum seat brackets. seat belts to pull the windows up. they ran high 10s low 11s right off the lot!!! and i heard they only made like 85 or something idk. but if you ever see a 68 Dart layin around with notched 1/4s at the wheel well and a black front end with everything else grey, stop what your doin. you coulda just found a big old money pot.