ya'll should know that the front pan seal is totally different between common block and non-common, but u can use the one peice seal on the 1986-1988 2.5 tall block.The CB bolt pattern is a little different in front, it has that little 8mm bolt in there. The crank end maybe different too, I don't remember.
But the point of my reply is just an fyi, I had that gasket on my CB and it leaked. First time I ever used one. I went back to the RTV and rubber ends and it's fine now.