manufacturor i was meaning,i could gather it wasnt going to be a huge frame
makers of small frame road bikes... there are too many to list! All the big names will have made small frames, as would custom / boutique companies.
By how much is your alloy fork too short for the Puch frame? If it's just a few millimetres you might get away with a lower stack height headset, or even just removing the washer between the top nut and the top race or cup (I know this not recommended but sometimes it's the only way)!?
PARTS FOR SALE:
vintage Brooks Professional saddle | Specialized FACT CX fork | Columbus fork | Reynolds 531 fork | Avid Arch Rival v-brakes | various 700c, 27" and 26" wheels | vintage Weco hubs (fixed/freewheel) | vintage Raleigh ladies frames + lots more!