Okay here is the deal I have a 465 with the 205 it came with and I also have the stock 700r4/208 setup in my truck. I have an 88 K5 with 350. I am running the D60/14FF with 4.56s and a locker in back. I got 35's and I plan on going to 37 or 40's once I get the transmission stuff done. I drive my truck everyday and will likely do so for the forseeable future. Here are my questions: Is the 700R4 a good candidate for the doubler? I worry about the crawl ratio since my engine is bone stock, maybe I can fix that after a doubler and tires. I also worry about the heat and how long the 700 will last. I know a lot of people talk about how good they are, but I have had mixed results with them. One I had lasted 150000 miles the next one lasted 15000. I have had this truck for 8 months and I always keep enough dough to replace the tranny should it go on me. The next question is the SM465. I plan on rebuilding it and the 205 and 203. I probably won't have the money to get the doubler right away so I figured I would rebuild the 465,205,203 so I can find out if something is wrong and so I know they are fresh. I wonder if the low gearing of the SM465 and the doubler is even usable. Is it too low? Is there such a thing? I also wonder how hard the install is and if there will be any trouble with the TBI setup. I prefer manuals and I prefer how usually they give you some warning before they fail, unless you shatter a clutch. However the 700s I lost just went. No moaning, no complaining, just no shifting past first. I figure this will likely stir some stuff up and I don't mind that as long as I know any bad experiences someone has had with either, as well as any good. Thanks for your time.