Try to look at team blue groove TLR 22 shell.
The Bulldog shells also offer more space.
If you are mounting the ESC at the backend, then you probably can't place a fan. Look at a smaller footprint ESC (e.g. NOVAK kinetic or ORCAQ).
Stubby lipo may also free up space.
I'm going to sort out my Losi 22...it's a mess and the shell doesn't fit good
