search around here for NV4500. I know a guy or 2 have done it. you will be OK with your high hump floor. why not go with hydraulic? if you are scared of the bleeding I can help.
have you checked at nordstrom's for a trans?
BTW, are your wheel studs 9/16"? want some long chrome nuts?
also, here is the link I was telling you about.
http://www.csgnetwork.com/multirpmcalc.html