Looking at an AD Boivin ETS kit to order from them only $109 but that seems alittle cheap for the Boivin brand. I say that because the Boivin brand runs about $140. So has anyone ordered from them???? GOOD/BAD? Oh and will the ETS kit work on my 440????? They only list the '96 583 and 670 MXZ not the '96 440 what is the diff?