No problem whatsoever with the mounting depth. However, getting the cover to slip back on the little bar holding the speaker in might make you want to pull you hair out!!!
BTW, those are fairly expensive speakers on most other sites, but these folks' prices are hard to beat. Somebody in a post up above receommended a pair of Infinity (?) speakers. Check their price at etronics and you'll find that particular pair about a hundred dollars cheaper.
I've got
http://www.etronics.com bookmarked and will use those folks again. Don't know 'em and have no interest in their business, but they have a terrific inventory and provided me good service.