When you are ready, replace the 4-barrel with a Holley Pro-Jection system. It bolts onto the existing manifold, and is easy to tune.
Problem solved.
To answer Terri's question, the Rover EFI is not the least reliable, but parts are complicated and expensive. Wiring problems with the stock harness can easily strand you. I generally do not allow EFI vehicles to participate in our "epic" (multi-month) expeditions for reliability issues, unless a complete system (all parts and ECU) and replacement wiring harness is carried in the spares kit, and has been tested on that particular vehicle prior to departure.
I do agree with your "pro" points in your list 100%- all valid points, but if the car does not run at all, that one "con" trumps all "pros"... Some of the other problems include more complicated waterproofing methods required, difficult troubleshooting when things aren't running perfect (unless you know the system intimately) and just plain complexity. If it is on your truck and you want to do an "epic" trip with us, you had better be able to deal with every system on your vehicle with a mastery, personally. Always assume it will fail, and have a plan for repair yourself- tools on board, parts on board, and knowledge in your head.
Diesel is the future.
Owner: James Leach Global Expedition Services.
1995 110 Regular