let me dig around a little. i don't think they *came* with QJ's but i've seen them mounted and the manifold flange is 100% for a spread bore. i've stumbled across two at the yard, one had a QJ and the other had a small holley on it with an adapter which seems the more common set up due to the inability of the general public to tune a carb.
anyway here's one for sale with a solex that looks like a long lost QJ twin:
[URL]https://www.ebay.com/itm/19624...G77DUaPv5TbNaaFGjN1ffqcw==|tkp:Bk9SR8i_raTCYw[/URL]
heres a bare one (pic from another forum):
View attachment 1716217303
the M30 motor can be built pretty stout and if i was gonna do it, 100% i'd throw a TQ on there just for that BBBWWWWAAAAAAAA when the 2ndaries tip in.