Been there, done that. The fuse side plugs in without replacing the box, AFAIKR. For the other side, remove the fender. Seriously, it just takes a few minutes and gives you easy access to where the harness comes through the firewall.
Their hotmail account was broken into. Just got a mail from them:
>Hello everyone. Sorry for the emails coming >from evansrace. We did not send
>them. Our hotmail account must have a virus, >or have been hacked. We are not
>going out of business, and do not use >peoples credit cards...