Here ya go, mrailing...

SCH-i730 vs SGH-760
Comparative Physical Specs

SCH-i730
Source: Samsung Web site
Size: 4.53" x 2.28" x 0.94"
Weight: 6.4 oz

SGH-i760 for GSM
Source:
http://pdadb.net/index.php?m=specs&id=660
(converted from metric units posted)
Size: 4.57" x 2.32" x 0.748"
Weight: 4.198 oz

Thus, vs. the current i730, the i760 is 0.04" longer, 0.04" narrower, and 0.192" (20.4%) thinner. The i760 is also 2.2 oz (34.4%) lighter--presumably, with standard battery in each case.

(Note: If a CDMA version of the SGH-i760 appears, specs are subject to change.)

--BAM