That does look the absolute nuts but to part with that kind of money with that kind of car kind of frightens me..... Why would someone fully repaint an e46 M3 unless it has had some kind of damage perhaps, or the paint was bad. Also how good has the respray been, no pics of the engine bay so has it been painted under there?
Engine wise i wouldve thought if it had full BMW service history then it would be fine, i drive my missus's dad 5 series BMW sometimes, that has 145k on it and drives like new!!
Nice motor but be wairy, very wairy!