P-90s it is then! I routed a Strat body for Jazzmaster pickups but only routed a guard for the bridge position JM, because a JM pup in the neck position is bigger than the edge of the guard. But there are also the Classic Player JM and the Squier J Mascis JM with pickups that are really a P-90 under the JM cover. Just in case you need a few more trees to bark up! Right now I have a Tele bridge pickup under a JM cover routed into a Strat guard with a Tele style three saddle hardtail bridge. So I'm barking for sure.