the integra's are B17, the 94+ are B18B1 for non-VTEC(RS, LS, GS, SE) Motors and a B18C1 for VTEC(GS-R and Type-R) motors, the only way to make sure that its and actual GS-R is to check the VIN on the car and check the block stamp for B18C1 on it. i know its hard to tell since everone does swaps now and you can simply go LS/VTEC now. but check out team-integra.net for more on integra's . you can email me toohttp://www.team-integra.net/sections...p?ArticleID=43