rs, ls, gs, gs-r
 

Okay I know that gsr has vtech but like 97+ came out the integra gs? does it have vtec or what? is it like the honda civic ex and si, si is vtec with doch and ex is vtec with sohc? Im just trying to figure this out, bc if gs is vtec then i wont worry about getting a gsr...

If I wanted a ls integra to have vtec, what would i have to buy, what price range would it be in, and how difficult would it be to install?