I have a 79 caprice with a 250. It's never been rebuilt and still has 160 psi compressions on all 6 cylinders. It belonged to my grandma but now she has given it to me. I'd like to change the monojet for one of Tom Langdon's H-W progressive carb. Im guessing I also need the adapter, but what aobut the linkage??? Do you think there might be any problems with hood clearance or anything like that??? I'm looking for a bit better performance, but still maintaining good fuel economy since it's going to be my daily driver. Right now it gets only 12-13 MPG which isn't good for a daily driver. So what can you guys tell me about the conversion?