Sorry it's a bit late but forgot, had a few pm's little while ago about engine cleaning brushes for oil galleries etc.
Gunsons do a nice 4 brush kit, around £4, all different sizes about 12"-14" long, should suit most, the kit I use is from
rob-beere-racing.co.uk/tools.html
This is a pukka kit around £38, I also have some 3 foot long brushes but can't remember where I got them from, pretty sure it was germany, if/when I manage to find out I'll post up .
Hope this helps someone.
tabetha