Dont have the actual details but have heard the 8.3 is just a fatter 5.9 and would likely fit with some hammering on the fender wells
But, again on the weight thing, they weigh a ton (almost 500# more than a 5.9) and the 1200# b5.9 is already too much weight for these front ends (both the actual axle rating and as far as keeping the rest of the front end from falling apart)
But, if you could maybe setup a dana80 and custom suspension in the front it would make for one hell of a head turner!
As far as performance parts, the old 8.3s commonly used a p-pump which as we all know are free to modify to a point, then aftermarket parts take it from there. Not sure what you would be able to do for turbo's though, that might be a pretty tight squeeze!
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