I have just finished changing my car to stick pack lipo. I put the servo by the motor as i said in an earlier post. It fits really well and i didn't need to cut the shell at all. I made sure i left enough room to get the motor in and out without taking the servo out. The car seems to balance really well to. Side to side nearly perfectly. Front to back is 45%/55%(with 30g of lead in the front). With sub C cells it was 46%/54% so it pretty close. 20 or 30g more should make it the same as sub C. I think this arrangement will work better in the long run as saddle packs might make the car rear heavy.
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