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tuff dawg engines. http://shop.ebay.com/i.html?_nkw=tuff+dawg&_sacat=0&_odkw=enginebuilder1&_osacat=0&_trksid=p3286.c0.m270.l1313I bought my 383 ( www.delbridge.net/install ) from them a few years back and love it. No core, free shipping. Bypass ebay, call him directly with whatever specs you want on it like i did... i specified the intake and cam, 4 bolt main, etc..and he shipped it out two days later. Ask for Darl. He's in Arizona and shipped it to VA for free.
Thanks for all your help. I still have a few more questions. They're about flexplates, harmonic balancers, and headers. I've been told I should probably get a new flexplate and harmonic balancer. As I mention before I'm new to all this stuff and many times when I look things up on the web it just confuses me more. Flexplates come with 153 or 168 teeth, are internally or externally balanced and some are SPI approved. I don't know what I need.Harmonic balancers come in different sizes, 6-1/4, 6-3/4, and 8 inches. They are also either internally or externally balanced. Which should I used? There are also have flexplate covers. Do I need one of those?Headers. Do I need headers? Are headers better than a regular exhaust system? I was planning on using the existing exhaust manifolds, exhaust pipes and mufflers. Right now the truck has dual glass packs which seem to be in pretty good shape.Any advice you could give on any of these topics would be greatly appreciated.