ideally a single carb, much less trouble than two carbs.
not really finding an option inside $1000 so will likely pass on the car/idea.
best option so far is cd manifold, fab up turbo adapter from posting above and a new 45 dcoe.
next best is dgv/dgev and manifold kit from ipd. less functional and less sexy.
or take a huge reliability risk on a '78 244 that has been sat ten years and so far has a seized fuel. pump and likely all k jet parts gummed up from not running. and probably a rusted fuel tank.