These seats are the best looking and comfy seats for a 65 - 71 mustang. when you first sit in one you feel comfy yet seriously planted in the seat! I am 194 lbs and 5' 11" and I highly recommend these seats.
The hardware that is needed i.e the 4 bolts, flat washer and lock washer are included in the seat track adapter kit STP1. You need this kit for the Rally Seats. The nuts for these bolts (4) are included with the seats. No need to run to the hardware store as stated in another post.
This is an easy up grade for your interior. You don't need any parts from the old seats. The instructions are minimal, but it pretty much common sense. Make sure to get the adapter (STP1) and go to the hardware store and get 8 bolts for mounting the adapter to the floor.
These seats are incredible! I'm 6'1" 190 lbs. and have no trouble with clearance when seated. It's a tad tricky figuring out the best way to climb in and out without the tilt wheel, but the look and comfort is sooooo worth it. The seat rack adapter is the only way to get these seats to fit. They bolted right in with no problem whatsoever! The sliders are smooth and clean and seem fairly durable. FIVE STARS!!! Yes, you will need to purchase the hardware to bolt the adapter to the floor, but what's $10 to have interior that looks like a million bucks?! GREAT BUY! VERY HAPPY!
To mount the seats to slide mechanism you need 4 bolts, washers and lock washers per seat. Not a single piece of mounting hardware was included. I spent $15 on metric sized hardware for both seats. Put a real damper on installation day. Otherwise the seats are well made and look nice in the box. Maybe I will have time tomorrow to mount them.
Excellent seats! Comfortable and sporty, with a classic look. REMEMBER TO PURCHASE SEAT TRACK ADAPTERS ( part number STP1,STP2 or STP3 )