Well, I am asking becuase I need to do a rebuild soon on my R and as wondering if the kit will fit. It seems to me that the componets of the Spoon Stroker kit is just balanced stock ITR parts. Even down the bore and stroke (81mmX87.2mm). So it should work right? Another reason it that the spoon kits for the B18C are discontinued so I can't get them anymore.
http://inlinefour.com/spoon18lstro.html

 

they are probablythe same b18c parts. price seems pretty good too.
I would reuse the b16b pistons though