FMIC Fitment question - help

Will a FMIC kit that is designed for a MK4 Golf fit on a MK4 Jetta? I was looking at the kit below and I thought it should fit as the front sub assembly is basically the same on both cars but the seller says no. Any thoughts?

http://www.ebay.ca/itm/140994503091?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

Should fit no problem.