Drew that T at the end is tool steel and will not punch out as they suggest in the fitting instructions...we tried it on the 71 Cuda conv and that Bananarama! would not come out ....bordering on destruction of the shaft
But as the extension shaft in the kit is so long you could cut the shaft just below the T or do as we did, as we did not use that shaft.... grind it down to make the flats to fit into the coupler.
Yes dimple the shaft with a 1/4" drill bit for the set screws and thread lock...
Dont worry it wont go anywhere even if they all fell out due to the D shape of the shaft and then shoulders as the shaft is then round it cant go up towards the wheel.
going down towards the box...the only thing that could help would be a separate locking collar just below the coupler at the end of the splines near the steering box end, or maybe just a pin below the splines there....then it couldnt go down either if they all fell out.
dont think it would separate if all the screws fell out (unlikely) as when it hit the box it is still just making connection albeit only by about 5 mm
Whatever its a thousand times better than the Mopar coupler
