i heard that the 7m's are prone to over heating
That's what we call a lie.
Words of advice freind, contrary to all you've learned from initial D and NFS Underground, a car doesn't need a bodykit to be cool. Infact, generally adding a bodykit to such a car instantly makes it
uncool.
Second, doing an auto to manual swap is A LOT harder than clicking a few icons and waiting for the dings. If someone with seriously no automotive know how such as yourself was able to do a tranny swap like that, do you seriously think my SVX would still be auto? Even if it was that easy, it would cost UPWARDS of $1000-$1500, assuming I did all the labor myself (I'm not exactly qualified to drill through a car's FIREWALL)
If you remeber I had a cressida for a while and it was a wonderful car. It blew a head gasket because I ruptured a coolant hose and never noticed. I know you're considering a M30 cause your dad is gonna buy you one or whatever. But seriously, if it comes down to you having to summon up your own cash, just buy a Z31. Same car, lower price. Or you could go for the cool factor and get a 200SX SE (S12).
And you know, all these guys are right. I know you've been diluted by the recent tuner culture, but I assure you, driving an american car will not kill you, nor will you lose "cool points" Though I will admit, your celebrity is pretty jankedy, the "R:RACING" sticker and fake guages really don't help either.