u can put them in the middle of tha car...there is a compartment there for stick type cells...u cant fit the aa pack in there or a hump pack tho.

my Jato is fully tricked out and will be up for sale as soon as i recieve the rest of the upgrade parts from HK.
it has these parts from GPM racing all in blue alloy

front and rear A arms
front and rear knuckles
front c hubs
rear bulkhead
front and rear shock towers
front body post mount
front and rear shocks
fuel tank cap
brake links
graphite brake pads
vented steel disk brake
titanium rear swing shafts
lightweight 3mm chassis
steering links

also has

pullstart
Crowd pleazer body sprayed black and original shell in red
4x pro-line trac a gators on agitator rims, 4x pro line speed paws on traxxas rims, original wheels
hardened steel main gear and clutch bell
stainless steel hex set throught the entire truck
large 3 racing engine cooling head (a million times better)
motor saver air filter
venom temp fail safe
tonnes of spares, including some revo shocks(much better than stock jato ones), original shocks, ball ends, all stock plastic parts
spare servos
original electric start with spare blue leads for glow plugs
spare original traxxas plugs
spare stainless steel disk brake plate plus new original one
plus a few more spares!

this thing goes like a rocket and stops so much better than stock!

will sell in the UK only when the rest of the parts are fitted as im after getting a Kyosho buggy for racing.