@ Charles - I installed a 2.2 Nikki on my truck a couple of weeks ago and I still have my factory 2.0 Nikki that ran well. You're more than welcome to it if you want it. We can pop the top off of it and clean it out well with some carb cleaner and put it on your truck. That's what I did to the 2.2 and it runs pretty well. Sounds like yours could be dirty or have excessive throttle shaft play (which causes a vacuum leak). It could also need the choke stove adjusted a little. Mine ran better after I drilled out the factory rivets, installed screws, and readjusted it. I also have a good factory coil off my truck you can have.
Also, I may be able to get you some air filter clips. What size filter do you have, 1 7/8" or 2 5/8"?
You can get a rebuild kit for a Holley 5200 for $16 from RockAuto that will work for the Weber as well.
@ Maz - Congrats on the new purchase!
The sender job was pretty easy. Have you tried grounding the sender wire to ensure that it isn't the gauge and not the sending unit itself? If it is the sending unit in the tank; I put the truck on tall jackstands, pulled the drain plug in the tank and drained the fuel into two 5 gallon buckets, dropped the tank with a floor jack, and replaced the sender which I bought new from RockAuto. The hardest part was removing the rubber hoses from the filler neck.
The tach cluster is a factory one out of a B2200. It's pretty much plug and play unless you want the factory clock to work, which involves a little rewiring. I didn't care about the clock so I left it unhooked. The big thing is the speedo cable routing. When you install the tach cluster you have to reroute the cable to the left or the cable will bind and break after exactly 10 miles of use (ask me how I know LOL) .
Here's Cliff's (Axle Breaker Earl) writeup. I didn't do the part for the clock.
I'm not sure what you mean by is the sender out of the dizzy? I did have to remove the ignition module in order to get the Crane HI-6 ignition box to work with the factory magnetic pickup. Basically you remove the ICM and add jumpers where it used to plug into the pickup coil.