I used mine for the first time yesterday. It fits fantastic, with mine being an early one Trish warned me of the alloy bumper being an exact fit over the brass nipples on the bulkhead - and may need some filing. Well granted it was an exact fit, but didn't need to do anything - went together very well.
I am using a Trishbits rear bulkhead too, with 20g of lead behind a short servo plus this front bulkhead, and my car was fantastic yesterday. The car jumped very level which was nice, and it cornered well too. Won't be taking any of those bits off, not only do they look bling but they make for a faster car.
(Granted I could have done better yesterday if I wasn't insisting on using bald tyres
)