UPDATE. You were right. We decided that we are going to swap the bell housings. The miller thought I meant the starter itself , and he didn't read or look at my text properly... I considered milling down the starter itself... but opted to do things the right way. Got another quote for $200 to mill the transmission... but no. Thanks to (itsa300zx) for that link on the bellhousing swap and asking and confirming with a local on my concerns. That clarified any doubts we had, not being transmission techs. Thanks again!!