NMB2 the reason you dont have issues with your BJs is it is in a ranger not a fullsize diesel pickup. MAJOR weight difference on the front axle
As for the ease of service. A kingpin axle can be rebuilt for under $100 with simple hand tools
A BJ axle is much more costly being BJs are 50+ a piece
Its a B2 not a ranger damn it
lol.
As for comparing my Truggy to a fullsize diesel, obviously the weight difference makes a difference but even still... if comparing how my axle gets used vs the stock application.. my Bronco II puts equal or more stress on those ball-joints than a stock truck can.
As for the ease of service and cost... I completely disagree with you.
To do it the right way, you are looking at about $200 in parts, and about $25 for a quality built allen wrench, unless you just have a 7/8" allen wrench sitting around... 99% of people dont.
Balljoints cost $130, all you need is a press... or a big hammer and a friend.
As for the ease of replacement, doing Kingpins is definitly NOT a glamorous task... it is not easy, especially on a 10yr-30yr old axle.
In a Daily driven environment like what the OP is planning on doing, he will see no advantage of a KP axle over a BJ. As a matter of fact the Balljoint 60 is stronger than a stock KP axle due to the knuckles, and the 96/97 has a much better brake system.
In an offroad application, BJ axle is fine on small rigs and its fine on probably 90% of big rigs. However there are alot of trucks that need something stronger, and thats when upgraded kingpins and Dedenbear knuckles come into the equation.