The coil spring conversion is common on rigs modified in South America. Also common on 40 series built by the FJ Company, but this seems to be a copy cat, not an actual FJCO truck. Never driven one with a coil spring conversion, but I suspect it would be quite a nice & welcome upgrade over...
That yellow one in Huston was a great buy and a tremendous value if it was the one that was just recently sold on the forum here? The white interior combined with being a South American truck would immediately turn me off of the one posted. Also, since its a BAT auction, you are likely to end...