Finally got around to installing the Hellwig Sway bar today!
I' m not a life-long wrencher; but the kit fit my 67 very well.
Lucky that they had not replaced lower control arms recently, because I still had the mounting tabs.
Outside of having to read closely, and do some upside down wiggling, the install went easily.
I use a paint can and a couple of kids play blocks to hold it up while I was wrenching.
My set up looks exactly like your Fast340!
Kudos to Hellwig!