[knightowl73]

if you have dropped spindles up front you mght get a prob there with 255's im thinkin, but out back will be harder. i think its a 5 or 5.5" backspacing for the rear on the new 10" wheel, and a 275/60 probaly wont be wide enough for that rim since your looking for bigger and fatter. 295/50 is too short in my opinion if your running 255's up front...
275-60-15 or you mght have to jump to drag radials to really get the look your after, like them 325-50's they have , but they are quite pricey for daily tires if you ask me.

by the way, your truck has the perfect look IMO, id just do 275-60 in the rear and lke 235/60 up front and call it a day for now.... the 10 inchers out back would look fierce though, but personally id keep the 7's up front still, to give the back a wider look compared to the front.