Hi , is there a right and a wrong way to remove seats from a 72 coupe ? Once the 4 bolts are undone does it roll out , or just lift our as is ? Does the back need to be upright or forward? Going to fit my lap belt retractors , are they under a cover under the carpet or under a cover “on”the carpet. Also looking for a pair of belt guides that screw to the inner sill. Any suggestions appreciated.