650 or 750 Edelbrock on 340

JY Hero.
Do you have any pics? First I have heard of QJ being used on non US cars.
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:

https://www.ebay.com/itm/1962465555...G77DUaPv5TbNaaFGjN1ffqcw==|tkp:Bk9SR8i_raTCYw
heres a bare one (pic from another forum):
20170221_152234.jpg

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.