I tried the proposed dimensions using a CEFX Chassis and Parma Speed 8 and Parma HD body...it's a close fit as I have the bodies slammed as low as possible but it works. I do not have a Protoform to try but expect it to be a non-issue.
I can not wait to use this saddle pack in a t-bar chassis.
on another note...not sure who posted it but 50C? what's the point? Not as if the pack can discharge at the claimed C rating due to the limitations of the wires and connectors. A 50C/4000 pack can be discharged at 200 continuous amps with burst over 400 amps. Good luck with that under RC applications...A 40C is more than enough for our needs...especially in 1/12th scale.
Gavin...we are all excited and waiting? Please keep us updated.