All Classified forums require a Site Supporter subscription. It is only $25 per year and you can buy and sell whatever you like on the forum. To become a Site Supporter, go to Your Profile and select "Paid Subscriptions."
can't see the pictures but if it is a stock seat from a 1977 into a 1983, yes it will bolt in. The drawbacks are the seat belts would go between the seat back and bottom, not through the bottom like the 83. Now the belts will be tight and if you need the seat up at all or you not skinny you may not get the belt buckled.