Thanks for all the replies and pics! I have a nice set of burnt orange interior including a 4 speed console so were covered there. We'd be repainting metal stuff either way so just a matter of getting the correct paint codes.
My thing to him was that if we do a nice job, he will have no trouble finding buyers if he later had to sell it. 70 Challenger 4 speed cars are desireable in any combo and orange in and out is pretty cool!