I am looking at a '72 Blazer in CA (one I've been eyeing for several weeks). Anyway, I took a look at it today and need soem feedback on estimated costs for a few items: (1) Leaf springs: it looks as if the front leaf springs are "frowning", i.e. curved downward instead of the normal curved upward. Is this normal? The rear appears to be somewhat normal, but I don't know what the OEM spec. is for height from ends to middle. What is the cost to get it back to spec? Also weird, it sits nearly level - maybe a slight droop in the rear (so why "smiling" leafs rear and frown front)? (2) The transfer case appears oily (not really suprised) but has a slight leak. What is the typical cost to button one up? (3) Any nightmares with emmissions? I saw the post about emissions in CO (I live in Castle Rock, CO - fortunate enough to be within the Denver Metro Air Testing coverage). This truck has electronic ignition (doen a couple of years ago). Is there some costs I need to be aware of, just in case? Thanks for the help!