the single most important thing I've learned in attaining responsive drivability and good fuel economy with the Weber 32/36 on this engine was making sure the timing is correct. that means making sure you're getting ported vacuum and manifold vacuum to the right ports on your distributor, and making sure that neither of the diaphragms is torn so that the vacuum advance actually works as designed.

so, no vacuum leaks, and proper timing. this is where you're going to get your throttle response and ability to hold cruise under light throttle, because the distributor will advance your timing allowing you to run leaner. that means no more foot to the floor all the time, which will give you better fuel economy, and with the proper timing, you'll find you flog the pony less to get the response you want.

spending money on anything else will just be a waste unless this stuff's properly set up. trust me. I used to get 12mpg before I figured this out now I get 17/18 in the city, about 22/23 highway. it could probably be better if I had stock size tires and stock cam. or if I could keep my foot out of it