Jacko, Rally design in Faversham do them for 0.80p a stud, you can either have +1/2" (12.7mm ish) or +1"(25mm ish) longer than standard. I have fitted +1" studs to all for corners of my Escos, it is fucking SHOCKING how many people are driving thier cossies round with only 4-5 threads holding thier wheels on
... For £20 or so you can have high tensile full length replacements, my studs now come right through the nuts, so there is very little chance of snapping them compared to fitting the std length ones.
Rally Design 01795 539930.
Fronts you can fit in situ, it is a bit tight but do-able. An air hammer makes it a LOT easier, and also just use a nut on them to protect the threads as you remove them. Fitting is the same, get them just through the hub, then use a buzz gun and a washer+nut to draw them into the hub. Make sure the faces of the hub are wire brush cleaned to make sure the studs are flush and not sat on dirt. Also, on re-fitting your wheels torque them up, then slacken them off and repeat, to make sure the studs are all tight .
The rears are a bit of a cunt, might need to drop the arms, I can't remember as I fitted mine when it was all apart for a new Danny B beam.