I got Fred Emilsson's lipo cradle kit - it shifts them both about 5mm outwards and means any/many lipos fit.
I also run a couple of .9mm brass sheets under each lipos for the extra weight.
Works quite well. Let's me tune the added weight very well (I can put two or three plates in - currently running 1).
I know my results were a bit naff at Worksop, but the car was going great towards the end of the day, once I got the balance I liked in the car (and stopped breaking it

).
In better hands, it would have done much better that I did

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