zacabrandy, be patient on getting the hang on putting these packs in the E4FS.

I have the leads coming out where the air dam is located. Whene I mount the pack I pass the leads first then I install the pack in place.

As for the SMC5000 pack I would not even think of trying it.

My Orion Platinum 4800 lipo is too thick and I would need to add 2 or 3mm of shims.

Hope this helps.