A sorted Scimitar would do the job, but the Essex V6 can be thirsty on short trips. My Gilbern would do a whiff over 30 on a long run, but local trips had it around 20mpg. This was with a manual choke as well. A Scimitar with a later V6 transplant would be Ok I suspect, as would one with a Rover V8, which are surprisingly economical.
