looking for a new heater core

[streetknight]

ok i am starting to assemble a new system and its going to be water cooled again. got almost every thing execpt the rad(for teh watercooling part), im looking for a heater core thats about 10" long from end to end x 5-6" wide x ??(2" would be prefered) anyone know of any?the one now on my other system is a bonneville is too huge. thanks sam