my friend went to speedfactory, he liked them, he has a built sohc and they hold records for single cams, but he said the tuners where knowledgeable and great to deal with.
also I know down south in Vancouver Wa, English racing is big buuuuuuuuut thats a drive.
let us know who you go to. my friend loved speedfactory and will be going back if he ever has questions.