WWE Legend Sunny -- I'm Down for Sex Tape ... If Price Is RIght

WWE Hall of Famer Tammy Sytch -- aka Sunny -- says she wants to rip a page from the Kim K playbook and star in a sex tape to help her career ... as long as the money's right.

Sytch appeared on the "TMZ Sports" (airing Tuesday at 9 PM PT, 12 ET on FS1) -- and says she's flattered with the $100,000 offer from Vivid Entertainment ... but says she's worth more dough.

You gotta watch the entire interview on tonight's show -- Sytch describes the kind of video she wants to make and tells us how she plans on spending the money if the two sides strike a deal.