Will these slipons fit an '89 FXRS-SP?

[Shooter1]

I am going back to the stock headpipes on my '89 FXRS-Sp and have been looking for a set of Cycle Shack or SE slipons. I found a set of baloney cut SE units that have the part number 80007-84B on them. I believe these were for the '84 model year but don't see any reason they wouldn't work on an '89. What say you guys?

Thanks
-Harv
#1017

[mp]

Cycle Shack says their mufflers for FXR's with Evo engines fit all years and models.  I also see a guy on ebay with your part number mufflers who says they fit all FXR's.