I recently made this conversion to my Chinese built efi CVH engine. There is a lot of useful stuff on the net, for example

http://members.aol.com/dvandrews/webers.htm

Also I reccommend a couple of books - Engine Management by Dave Walker (great for carb stuff and injection stuff) and another one on DCOE Weber and DHLA Dellorto which I think may be one of the speedpro series - you can get all this on amazon.

Don't assume the jetting and chokes are right to start with, I used a set of carbs from ebay that had been on a CVH before, and it was way wrong for my engine, then I changed the cam and that changed everything again.

So reckon on some rolling roading, and/ or get yourself a wide band lambda reader air fuel ratio meter.

For the fuel pump wiring, I haven't done it properly yet but you would ideally want something that went on and off with the engine rotation (easy if you have an ECU to control the ignition) as well as the ability to kill it if you need to by a manual switch, and also the ability to fire it up manually for example for testing or priming the carbs.

For ignition, my experience was to try to run them together with a stock ecu, it didn't work well so I got an emerald ecu. of course by this time it might have been more sensible to go with throttle body injection but never mind.

if you use a distributor, i have heard that the vacuum advance won't work properly and so is best not used, although that will really hurt economy. ideally you want to use a dizzy with a modified advance curve or else get one that comes off the shelf with something more appropriate - micro dynamics make or used to make one, i've seen them on ebay. ignition timing is an important factor.

It's not a low hassle option, but will change a boring saloon into a whole box of fun, not just because of any power gain but they just sound so mean.