I was able to find a beautiful back seat for my convertible on ebay for only $104.00, it was even recovered. The only problem was that the springs were soft and your butt would bottom out when you sat down. Today I went to the local fabric and craft shop and bought about 2 yards of 3" thick medium density foam, cost was about $30.00. I removed the seat bottom from the car and flipped it over on a table. I cut the foam to fit under the seat and shoved it in between the springs and lower seat frame. I did it in two sections to make it easier to install. After it was done and the seat was reinstalled I gave it a test - no more bottoming out and best of all, no funny or strange feeling. In other words, if I did not tell you, you would not know what had been done to the seat bottom.
When I recovered the seats of a 66 lincoln i owned, I bought a book on auto upholstery first so i wouldn't jack things up. Surprisingly stuffing foam between worn out springs is a common practice for upholstery clients that do not want fork out the cash for new seats completely. Another tip is if you want a softer "feel" for your seat cushions you can remove the seat covers and lay a feathered layer of cotton on the seats. This is extremely comfortable and you can but it buy the roll at the same upholstery supply stores. I paid 20 bucks for mine... Just turn the covers inside out, spray the inside of the seats with silicone (to not tear the cotton when sliding back on) and your flip them back on and secure with the clips or hog-rings and voila!
I got tired of sitting on what felt as supportive as a beachball, so I pulled the bench out of the Skylark. <o> </o> Drivers and pass sides of the cushion had broken springs onthe sides. I removed the broken springs & stuffed high density sofafoam in to the area where the springs were. <o> </o> I cut the foam roughly to shape, and made sure that I didntover do it. <o> </o> It worked a treat, no more feeling like I was going to fallout the door on RH turns. <o> </o> And while youve got the seat/s out, give the slides a clean& lube. <o> </o> The foam trick worked for me. <o> </o> Chris <o> </o>
I've done this also, works great. I've also layed on some plain vinyl like Lee did with foam and it also made a big difference. Us cheapskates can find some unique solutions, can't we?!! You should have been around in the 50s when the back seats were way bigger!:Brow: