I am looking to keep my 292 inline Chevy with my 65 pickup, but I would like to try and get better mileage out of it. These are my considerations that are more simple. 3.50-4.10 rear 5 speed transmission My next consideration is to put in a MPI or TBI system to tune in better mileage. I have the original single barrel that is being rebuilt right now and was wondering if any thought it would be worth just keeping that, but I am leaning towards a MPI system down the road. Does anyone have any better ideas?