Which of these seat pans will match up with my 83 xj550 seca?

Looking to buy a new seat/seat pan for my seca. I have included a couple of links to ones on ebay.

This one is supposedly off an xs400. The add states that it will mount up, but it looks differen. Will it fit?

http://pages.ebay.com/motors/link/?nav=item.view&id=221993883465&alt=web

This one is off of an 81 xj550 seca. I just want to make sure there are no differences in the years.

http://pages.ebay.com/motors/link/?nav=item.view&id=222006197486&alt=web

Thanks!

 

The only seat pan that is guaranteed fit an Xj550 Seca is one off of an Xj550 Seca. Year of manufacture doesn't matter. The SX400 was what became the XJ550, but I'm not sure that the seat is a direct fit (though it may be).

 

the seca seat is a fit and has the latch looks like a good cover but has no seat strap
http://www.yamahapartsnation.com/oemparts/p/yamaha/4g0-w2472-01-00/double-seat-assembly

title in first ad is "YAMAHA SECA 82-83 xj 600 600 xj seat pan foam"
then the seller says it will fit

1983 Yamaha XJ550 Maxim
1982 Yamaha XJ550 Maxim
1981 Yamaha XJ550 Maxim
1983 Yamaha XS400 Maxim
1982 Yamaha XS400 Maxim
ask him to garentee the fit
I would walk away from this ad

you currently do not have a seat? your posted photo has one. there are seat covers on ebay if thats what you need

 

My seat is fine. I am actually turning my bike is a "cafe" styled bike. I actually just want a seat pan to use to mold the cafe seat to that I will be making out of fiberglass. and don't want to tear apart my perfectly good seat to get at the pan. I am going to keep all the mounting and frame stock, so I can convert it back to stock if I ever feel the need. Thanks for your help!

 

..looks way off to me esp. double seat back shape.

 

Only 550 Seca for fit. Others may look close or even the same, but there's differences. Nice thing is that any year xj550 Seca will fit