Another advantage of the 200-4R is it is the same overall length as the TH350, so the length of the driveshaft should not be an issue. I think the mounting point is farther aft, so the crossmember would have to be moved.
Kent
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'56 F-100 (w/all GM stuff)
Lookin' for another parts chaser! ![Flag Smilie](http://67-72chevytrucks.com/vboard/images/smilies/patriotsmilie.gif)
'05 GMC crew cab
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