This one's easier, I hope. Is there anything wrong with me buying a universal fit converter off the internet, and having a local mechanic install it? It would save me $100-$175, but the mechanics sound hesitant to use anything but a direct fit, and they won't give me a warranty if they don't supply the part. I have a 98 GMC Sierra 1500 SL, 4x4, 5.0L V8, auto, gas, reg cab, reg bed. I was looking at getting this Eastern brand converter, for $93.76 on this site: http://replacement.car-stuff.com/pa...verter&returnurl=null&dp=true&showdc=true#top (it's about halfway down the page) Any comments/advice? Thanks!