700 and 200 are easy to tell apart. a 200 4r has no removable tailhousing, dual bellhousing bolt patern, and an oval track looking oil pan with 2 sumps. a 700 r4 has a removable tailhousing with about 3 possibly 4 tailhousing available, a chevy only bolt patern execpt for a hand full that had b.o.p. bolt patern but those very hard to find, and 16 bolt square oil pan. but they both use the same yokes which is the same as the th350 and PG. i want to say the 700 is about 7 inches longer than the 200. other than GN the 200 4r is GM forgoten tranny it was just about everything with a 305 ,307, or other base v8s