I swapped the standard T3 Lite Tupperware stock for a walnut Hunter stock I bought from a fine gentleman here. Gorgeous piece of wood.. if anything it feels slightly slimmer through the wrist and along the forestock than the synthetic.
For an accurate, drag- through- the- brush stock I'd also be considering the B&C.
$500 isn't that bad when you consider that Prophet River is selling them for $399 in Canada.
For the T3X, I do believe one size fits all, provided you're talking about similar barrels. IE, sporter to sporter. A heavy barrel action may not have enough room in the barrel channel of a sporter stock.