I've been looking around for a downhill bike that's right around 1500, and found absolute crap on Craigslist for that price. I found an old 2004 kona stinky with all stock components aside from a rock shox boxxer front fork which is fairly old probably 06 or 07. I could probably get it for 425 and put about 1000 in upgrades. Is it worth it? And if you think so what upgrades are key and much needed? Thanks