Quote Mr rust on day one

Hi Rudy & welcome, I might as well chip in first with my views. At the moment you have what sounds like a classic car restoration . If you start chopping it to take the larger engine with all the watercooling etc then it immediatly becomes a "project car".
Now on Ebay as

ABARTH 1242cc Conversion Unfinished Project.
Quote Hudsonhenry:-
If you want to do a conversion properly, be prepared to spend a lot of time and a lot of money and most importantly, be sure that you can see it through before you start.
Suprise suprise, sadly a nice 500, could have had all the mods on a 650 tuned engine and still been street legal.
3500 and reserve not met, Though I can see he has invested a lot of money, just needs finishing, He even bought a panda head, can, carbs for the 650 engine....