Door Speakers - what's the maximum depth I can fit?

I had my stock speakers replaced with Rainbow DreamLine C6.2 but the tweeters are rough so I'm considering replacing these front speakers again with the JBL MS-62C:-

http://www.talkaudio...n></span>-r1172

http://a248.e.akamai...09/109MS52C.PDF

Will they fit in my front doors OK? (the depth is 78mm)

Are the rear door speakers also 6.5 inches? I might get some coaxials for these - any recommendations for a cheap pair for use as soundfill?

Thanks

Edited 16 June, 201313 yr by FabFabFabia