Its time to replace the 305 in my blazer, which brings me to the question what should I put in it. Well really not what should I put in it but can I? I've talked to the emissions people and they said I can put a 350 in the truck because it was sold that way stock. My question is if I put a 383 Stroker in it will they know? I maybe mistaken but isn't a 383 just a 350 with a 400 crank???? How would the emissions people know its a 383 and not a standard 350? I don't want to put a 383 in there if they have some way of knowing what it is and not passing it when I need to get the IM sticker. I'm planning on buying a long block from either Napa, GM, or Schucks. I've read about everyone liking the GM, but does anyone have anything to say about a Napa or Schucks longblock??? Also since I'm going to be replacing the engine what should I do with the tranny? The guy I bought it from replaced the 700r4 with a TH350 what if anything should I do to/with the tranny. I'd really like to have the 700r4 back because I'd like to have overdrive. If I were to do this, can you recommend where to buy a quality 700r4? I mostly use the truck for a daily driver, I tow a trailer with it occationally and I plan to install a 4" lift this year to do a bit more wheeling. All advice is welcome and appreciated.