1966 vs 1967 seats

I just purchased a 1966 COUPE. The car is relatively rust free and I am beginning to shop around for a complete new interior. Here is my question.
What seats are interchangeable with a 1966 coupe?
I have seen some skins and seats on E-Bay, but I am not sure what will fit the back as well as the front.
Will a 1969 coupe back seat fit in a 1966?
Are the 1966,67,68 seats (front & back) the same?
Does anybody manufacture reproduction seat frames?
Are there any reliable dealers in seats frames as well as upholstery?
Any suggestions as well as directions are welcome.

with enough blood, sweat and tears, (don't forget the green $tuff) you can make just about anything fit. If you're looking for parts I would recommend MustangsPlus.com, Cal-Mustang.com or Mustang-Unl.com. They'd have most of the parts/accessories you may be looking for when it comes to restoring or resto-modding your ride. There's always Summit when it comes to the engine. TotalControlProducts.com has some great parts to make your old stang handle just as well, if not better than anything made today. Those are my personal favorites. For more info you can head over to fomoco.com/forummain. there's more than enough information there for classic mustangs.

Now as for your question, i don't think 67-68 seats would fit. I know the car was made a little bit longer and a little bit wider after 66.

The green stuff is definitely the determining factor. I was trying to
budget the rest on this project and planned pretty good for the big things like power brakes, steering and maybe swapping my solid cam out. BUT WOW... the little things like gaskets, weatherstripping, chrome, hood, window mechanisms etc.etc... ADD UP! WHEW!!!!!
Thanks for the tip. I really liked the looks and the work on the cowl hoods that Mustang Plus had, but I opted for Mustang Depot cowl hood because shipping was only $50.00 as opposed to $175.00. I was able to get the hood "delivered" at my $400.00 budget mark. The body shop is very pleased with the hood.
I have also shopped at CJ PONY PARTS, who are about 3 hrs from me.
Good Customer service, prices are great, shipping is so,so.

As far as seats go, I am now shopping for both after market and used
black leather bucket seats from a 1995 and up Mustang. The rear seats in these cars are a little bit narrower than the 66 and I think I can get them to fasten in fairly well.

Unable to load up pics here, if interested, PM E-Mail.
Car is being sanded, primed base coat/ clear coat Metallic Yellow.
Interior Metal painted to match exterior.
Carpet, seats,headliner and door panels to be black.

After painting I am going to try and swap or sell the WELD WHEELS.