New a-body owner

finding parts is harder because it was only
a 3 year car with somewhat low production

the drivetrain swap will be the easiest because of the interchangeability
of a bodies in general

finding window parts will give you a fit as will weatherstrip stuff (2dr post)

go to a Summit store and get some bucket seats, do a rear seat delete
and call it a day....restoring a interior stock will cost a bundle, make it
like YOU want it