Thanks to everyone for the pics! I'll take a few shortly and add to the post. Afaik the short hanger (same part on Panteras)is 60mm between centers and is a common Alfa part. The long one was hard to find but is also Alfa. The new part now on my car measures 90mm between centers; it was supposedly from an Guilietta 750 101 (1956-64) but probably others models as well; found a reproduction set ~ 2 years ago. Maybe it's a more common part now. Anyway, on 8MA1010, due to the Hall header dimensions, 105mm between centers would actually be ideal. I THINK w/ pure stock exhaust parts the 90mm version would fit (can anyone confirm? - can't find my heavily baked OEM parts tonight to check!) Interestingly the new 'factory-sold' set illustrated in Lee's post does not have the 60:90 size ratio I'd expect...more like ~60:75?
Pinning down these Goose parts is never easy