I never thought to myself hey I want to buy a 77 Coupe DeVille and do an ls swap.... but here we are now. This car has 59k original miles, well not the motor and the transmission. I bought it from a friend who bought it from the original owner. I’m not for sure what was wrong with the big block 425 that was in it, definitely didn’t care because I had plans for the car after I saw it. Literally everything still works, I swapped a 00 Silverado 5.3 lm7 in between the frame rails backed with a th400, Texas speed torquer v2 232/234, 3200 stall, 243 heads, and everything Holley up top.