whats better ? efi or carbs

right guys wanted to know whats better for my range rover ? carbs or efi and if i did ever change to carbs what do i have to change on the eletrics side of things ? ,and how worse is the fuel consumtion and how do i go about fitting the lpg system to a carbs set up ? as on my efi it goes in on the mass flow air sensor

ok.
I have a 4.0l on carbs with lpg.It is on carbs because it reduces the eletric****erie that so commonly plagues the p38.if your sensible carbs can be better.dated now though most like efi.

so if i went to carbs what would i have to do with eletrics ? and what about the ecu ? and fuel line and so on ?

hmmmmm.........

I have a simple ignition dizzy and points.A small relay system to run solenoid on LPG.Lights and thats it or so.No eletric seats or injection systems,no eletric windows to open themselfs either.
Eletric fuel pump for petrol.