I bought a '74 sixteen foot Lund that has a Chrysler 90hp motor of the same year. I have only had it out three times and it seems to run fine. It does however take time to fire before and during a day's trip, w/ a brand new battery. It also smokes quite a bit, especially when idleing. I plan on putting $200-$300 into it as soon as possible. Not knowing the previous history or care, what would the most benneficial things be to replace? Are there things I shouldn't screw with? Who sells good affordable product? etc. Thanks so much!