Thanks guys... I appreciate the speedy replies.

I was looking at Earl's hoses and fittings (per a diagram on the 4x4 Isuzu forum), and it looks like it would cost around $156 for the hose and fittings... then you would have to cut and fit the fittings yourself, then install and hope everything works and fits correctly.

I'd say the ones from Darlington are the absolute best deal.