Locking hub questions for a 93 d350 dually

[JeepBuilder]

Greetings all,
Tried to edit the D350 to W350 and could not see a way...
So....
My firewood guy needs a locking hub. He is 85 and needs help getting his problem fixed. He has a 1993 W350 dually truck that works double time delivering wood. Would his front dana 60 have 30 spline outer stub axles or 35 spline? He lost a wheel bearing and it took out his bearing hub and locking hub. He is hard of hearing so he did not hear the bearing going south till he darn near lost his front wheel. The guy who provided a bearing hub sold him one that needed the 7/16 lug stud holes drilled out for the larger size. I think he said 5/8ths. And he put a drive flange on as he did not have a used locking hub. So will this used replacement bearing hub be fine with a new locking hub ordered by the 1993 W350 dually application? I just wanted to ask about spline count and if the bearing hub would be suitable since it appears to have come off a lighter duty truck. I was looking at Summit racing for replacements. Summit is reliable and fast to ship. Any other suggestions? Thanks ahead of time and happy 4th of July.

 

[NIsaacs]

Some good info here:

FWI, D-350 is 4x2 and W-350 is 4x4.

https://torqueking.com/category/hubs-1975-1993-dodge-dana-60-front-axle/

 

[JeepBuilder]

Oops, I meant W350... I will go to Torque King and have a look. Thank you.

EDIT: Went and had a look at Torque King. Nice they sell individual hub parts. I am trying to get ahold of my friend to see if he has any of the old parts and evaluate from there. I did not think of TQ, I donated a lot of money to them for my NV4500 rebuild parts . A good but spendy shop to get drivetrain parts from. And they are right next door in Montana. Again, Thank you..
Al