"Drag Racing" start battery

[Brow]

Thats a pretty serious chassis/cage and big tyre combo. I would be assuming turbo rotary going in the front and quite possibly 8sec or quicker on the quarter mile.
I used to run a drag car in my past and know a little about them. I used to run Odyssey batteries capable of putting out 650 amps under cranking load for about 20sec. Used to start a 460 ci big block ford pretty quick. I really don't know how lipo or life batts would handle high current for 5-10secs at a time cranking a big block over. I certainly don't think the leads would hold up to it. I would also be concerned for the internal batt connections.