Securing 6 cells in an xray M18 ?

[Bashfull]

Hi, I am building an xray M18 using a penguin 7500 chassis. I bought a couple of used 6 cell battery packs for it but the battery hold down system is only designed to hold 5 cells. Any ideas ( pics ) on how to secure the 6 cell packs in the car ? :confused: Thanks

[baih]

i think penguin made optional battery holders. go to their website.
or try here www.one18th.com

[SoCal Local]

Penguin makes a saddle pack mount if you choose to run 6 cells. I don't think there is any other way besides doing 3 cells on each side to get 6 cells into that chassis.