BRIAN ,
Do these have piston skirt cuttaways , or a Full skirt .
Why Im asking is that they drop in a FSR OS, Magnum , Royal, ASP & Thunder Tiger
![](http://www.rcuniverse.com/forum/attachment.php?attachmentid=19295&d=1375296071)
Paul Walker is said to have used a FP P/L in a FSR 40 ( refitted for wrist pin circlips )
Playing Around - The ones with piston cut outs stuff up the equation , as the FPisnt tangental - Ex at side 90 Degrees .
![Angry >:(](https://stunthanger.com/smf/Smileys/classic/angry.gif)
incidently , while we're here , the 45 FSR has differant bore stroke & liner O.D. so is not a interchange , bar front housing & suchlike.
![Angry >:(](https://stunthanger.com/smf/Smileys/classic/angry.gif)